Guys, I'm thinking about getting a new Mac, but to choose the right one for me I need help to assess what my needs are. Basically, the only time when I really push my computer to the limit is when I watch very high quality HD videos on my Sony Bravia 32D3000 HDTV via my MacBook (mini-DVI/VGA). Videos are sometimes compressed like this : Video Codec : 2-pass H.264 (.mp4) Video Bitrate : 5065 kbps Video Framerate : 59.94 fps Resolution : 1280x720 Audio Codec : AC3; 48000 Hz; stereo; 448 kbps I don't do the encoding, but I watch tons of sports videos like those. For that kind of things, what is the most important ? - a fast processor - more RAM memory - or a great video memory ? My MacBook cannot play videos of that quality, which is one reason why I am considering getting a new one (probably an iMac).