I am debating weather to get a 20" iMac vs. a 23" HD display + mini. I am an new mac user so I need you guys help. I will use the macs mainly for entertainment: music, movie, web-srufing. I would like to be able to watch HDTV on the apple monitor, also need to capacity to hook it up with my PS2 and PS3 in the future. Any advice?