Hopefully this pointers'll help:
- Keep in mind that the tradeoff of not having to deal with tech support for individual parts (e.g. buying pre-built) is a pretty steep drop in "bang-for-buck", especially for gaming rigs. Look for clearance sales.
- My best suggestion is to go "hybrid built". e.g. buy a decent desktop for ~$400-500 and spend another $1-200 on a decent video card. If you're doing this, don't go for a big video card, your cheaper desktop might not have the power (smaller is better). Geforce 550 or Radeon 7770 is probably a good bet.
- WAIT WAIT WAIT. Valve's planning on launching a variety of Steam boxes this fall, between them and a few of their partners. I'd honestly tell you to wait to see how these turn out. All will be made for gaming and most will be made for a budget, so you might find something you like.
Assuming the Steam boxes hit, a few key suggestions:
- If there's some with Windows, GO FOR IT. I know we all hate Windows 8, but they're going to work with nearly all PC games.
- Don't hesitate to tack an extra $2-300 for a Steam box vs an XB1 or PS4 if the graphics compare favorably. You'll make it up in two years' worth of Steam sales (July & January, usually). Never mind that you can catch up on PC ports of any games you missed.
- If you're really into console gaming, SUPPORT CAPCOM. I can't stress this enough, they're really the only publisher from moontown that's offering honest support for PC releases.
CONTROLLERS:
If you own Xbox 360 remotes, invest in this:
http://www.amazon.com/HDE-Wireless-Receiver-compatible-Xbox-controller/dp/B0096PLB9O/ref=sr_1_5?ie=UTF8&qid=1370616128&sr=8-5&keywords=xbox+adapterWorks with up to 4 wireless remotes, and most games will automagically pick it up. Note that if the official driver doesn't work for you, you probably got a bootleg unit (most are, Microsoft discontinued them). Your (sadly slightly hoaky) solution:
http://www.selfsimilar.org/2011/07/counterfeit-xbox-360-wireless-receiver-drivers/comment-page-1/If you own Wiimotes or PS3 remotes, pick up one of these:
http://www.amazon.com/IOGEAR-Bluetooth-Micro-Adapter-GBU521/dp/B007GFX0PY/ref=sr_1_7?ie=UTF8&qid=1370616416&sr=8-7&keywords=bluetooth+usbIt pairs bluetooth headsets as well. Pick up MotionJoy to get it working wirelessly with controllers. FAR hoakier than the Xbox option, again, sadly.
EDIT: I did NOT know we were lookin' through refurbished PCs, my bad. Here's my suggestion. At your budget, get this. No, seriously, get it. Yes, it's worth the extra $30. :
http://www.newegg.com/Product/Product.aspx?Item=N82E16883256785Don't bother with a more expensive machine. If this doesn't keep up 2-4 years from now, get a $100 power supply (750w and up) and a $200 video card, and you'll be able to play whatever's out at the time at amazing settings.