I'm looking for a notebook to buy used on ebay, . I have a dell D630 that I like but its getting pretty dated. The dell e6400 is nice, the back removes easily for changing parts, it usually has 4 gb of ram, but I would like to put 8 in but its expensive. plus cpu performance is good but nothing to write home about. I would like to upgrade to an i5 system. I like HP EliteBook 8460p, memory is cheap, but the hard drive is kind of buried in the system, plus I don't see a lot of them on sale on ebay. I would like something that is really popular with business right now so they will be going for 100-200 on ebay over the next year or so when business upgrade. the dell d630 is going for about $75 now and the e6400 about 125, and without a hard drive its about $60-$75 which is an awesome price. I like the business model notebooks because I think they are more rugged and higher quality. Also, I would like the upgrade wifi to ac, which makes the Dell a better choice than the HP (HP bios doesn't like 3rd party wifi devices). I'd like also to have a model that has a 2nd hard drive bay available for a 2nd sata ssd drive. Probably I do some Ebay searches in notebooks on i5 machines with 8gb ram and see whats the most numerous and cheapest.