The optimal size depends entirely on your distance from the screen and how much desk space you have... If you're sitting close to the screen and it's a regular size desk then a couple of 24" monitors will be more than enough.... if You're sitting farther back, maybe you'd rather have a much larger screen.
But having a large monitor and sitting further away > sitting closer with a small monitor
I agree with this. Going from my phone to my 17" laptop is just jarring, it feels way too big since it's right in my lap, but from either to my 24" monitor that I sit back a few feet from feels perfect.
Every time I try to go where I really wanna be it's already where I am, 'cuz I'm already there XBL, PSN, Steam, Origin, BSN, GFAQs, MC: PhilOnDez