They're great for that price especially if you like to have a bit more bass. I even saw them regularly on several recommended lists.
And with the leftover money you can get a decent soundcard - Soundblaster Titanium HD /if you feel lucky on ebay, as it is kinda rare to score one for a good price... well... being kinda rare sucks and rises the prices.../ or a Soundblaster Z /I like the HD more/.
Asus Xonar is a decent choice too, but they are better for music and movies than games...
As for integrated sound... Try it this way - get a large pot and place it over your speakers /if you have any at hand/. That should kinda emulate the sound an integrated sound card sounds like compared to a dedicated one /without the pot covering them/ 😀