Bro if playing games and watching youtube videos is your priority either go for iphone 3g or 3gs(if you can increase your budget by 3-4 k). Iphone has the best apps even 3g can play pretty good games!
Or go for HD2(still gotta increase your budget upto 21k minimum for a good piece)
Best option: Buy ipod touch 4g second hand(you can get one in 15k) plus buy your camera and a decent sonyericsson or nokia phone with the leftover money 