Originally Posted by Amenbrother
Ok so the cable and adapter... That might hurt the wallet I am guessing? Especially at Best Buy.
The cheapest HDMI cable will do - see http://conversation.which.co.uk/tech...yth-expensive/
Of the two devices you've mentioned, I'd go for the iPad 2 as a gaming device for the reasons explained in this thread: no lag, better IQ. In addition, particularly if you can get it second-hand, the 30-pin HDMI adapter is significantly cheaper than the newer Lightning adapter.
Make absolutely sure you purchase the 2nd-generation one for the reasons I've explained at TA's sister site, MR: http://forums.macrumors.com/showthread.php?t=1581053