you did not list many specifics...
size of tv?
brand preferences?
did you want a cheap brand which you could replace in a few years if it breaks or a quality brand you would have repaired?
do you care about 120/240hz or 3d?
how many channels in your sound system?
did you want a htib or are you comfortable building your own with individual speakers?
what is your max budget?
and most importantly what is your country of origin?
as for televisions...
i like to only suggest 3 brands: sony ,samsung and possibly lg. you can get parts for them and they are the industry leaders right now at least for sales in the usa.
i've always liked sony (i'm using one right now for my computer right now) and the bravia engine is just wonderful. i've had good luck in terms of quality with them as well. my tv is years old now and still has had zero issues. parts are also readily available. i cannot recommend any specific models as mine is too old to recommend and i'm not sure what is good in their current lineup without actually looking in person.
samsung is top dog right now and trumps sony and lg in sales. my parents recentely were in the market for a new 50" sized tv and ended up with the UN50EH6000FXZA which i helped them set up. its a very nice clear crisp tv however only once you disable 120hz (and revert back to 60hz mode) as well as disabling motionflow and all the other gizmos you pay extra for. they result in what is known as the soap opera effect and many people used to watching tv will say that things look "fake" or "plasticy" even though on paper it is technically better. our brains are already used to the blur and slight choppyness of movies and anything else looks bad to some of us (myself included). of course some people really like the feature. you can get the tv when it goes on sale for about $950 and i would wait for a tv to be on sale before buying. dont ever pay full retail price.
i cannot really recommend too much from lg as i dont have much dealings with their televisions. i can only say that they have some pretty decent offerings.
as for sound systems....
most bose is synonymous with crap. yes, i do realize that in many cases they sound alright (i even have a bose sound system in my car) however they are typically rather cheaply built and the only reason they sound good is through good engineering and design. the only well built models are some of the expensive high end models. yes, i've heard the displays (and as i said i own a system in my car) but i just do not think they are worth anywhere near the price they demand. for the same cash you can do much much better.
what i would highly suggest is to build a system from scratch instead of buying a home theater in a box (htib). htib are the ones which typically come with a dvd player/receiver combo with all speakers and the sub. of course there are a few notable exceptions: these are sets like the energy take 5.1 classic $350 or klipsch hd theater 600 $500 which contain all speakers and a subwoofer but lack a receiver. you would then pair the set up with a decent receiver you buy seperately. also of note are a few htib sets by boston acoustics and a few other brands which pair a real receiver (not one of those crappy dvd player combo boxes) into the deal.
if you wanted to spend more money on a speaker system and wanted more than just satelite speakers then i would highly suggest sony floorstanding speakers like the ssf6000 (or whatever the current model is in in their tower speaker lineup). they have a pair of them in the living room and at the time they were on sale for $120 for two speakers (yes thats only $60 each). they run them with a sony 5.2 receiver they bought for $200 and honestly they do not even need a subwoofer. you can manage fronts and rears for about $300, a receiver for $200 a center channel for $150 +/- and then a subwoofer. say a budget of perhaps $800-900 thinking on the high side. if you bought a $950 tv this would total about $1850 which is a bit more than your budget however the pure amount of sound output and immersion is a huge difference.
what do i use? i use a klipsch quintet iv 5.0 satelite speaker set, a 450w klipsch sub and a pioneer vsx-30 receiver. about $1300 of equpiment however klipsch is a bit higher tier than sony although that isnt to say that they are necessarily better. i do find them more clear and precise than my parents set however since they are satelites (and they have floorstanders) they lack the pure volume and bass output. i'm still very happy with my set and they work great. you can see a photo of my set in my signature link if you care.
other things of note:
-sony bookshelf speakers are also a decent price and could take the place of the floorstanders i mentioned before. i think the floorstanders are a bit better deal though.
-boston acoustics has some good speakers. klipsh is a pretty decent brand however is expensive. sony doesnt have the best speakers but they are very good for the price so are definitely good for those on a budget. i'm likely missing alot of brands but at least it helps you start looking.
-good receiver brands are pioneer, yamaha, onkyo. sony can be a bit iffy but isnt terrible for the price. i had only minor issues with the unit i helped my parents set up for their new entertainment center and since then there have been no issues.
as far as actual specifics of pairing this with that and using this gage speaker wire etc etc etc.... that would be determined when you actually figure out a baseline for what you want to buy.
anyways, just a few thoughts.
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