Here is setup of mine at current state of the art
1x 32" HD LCD TV (upscaled to 1080p using Nvidia Drivers)
2x 17" LCD Screens
2x PC's (main PC where all recordings of screen and games are made, and backup one just for audio recording)
1x laptop (just in case backup PC get nuts and it is used for sound recording... Primary usage is college work)
2x old webcams as mics (one is in use now, second one is waiting until this make nuts and gave s*it in pants then starts to make rolling it around like crazy cowboy on drugs)
2x crappy speakers (USB powered)
2x headphones (one is in use, second one are waiting for use... Both are same models which is win because I got them for super cheap)
1x smartphone for video recording at 720p
1x smartphone for just in case audio recording (older one, but still usable)
TL;DR - setup is a messy one but works just fine for my case (until I get new monitors and new rig in next year with real microphone not like current webcam as mic idea)