This is my first post here so pleas be gentle Due to a significant "anniversary" coming up I'm going to treat myself and move from Windows to Mac. I've decided to get a 24" iMac. The question is: should I go for the 9400M integrated graphics or the dedicated GT120 graphics card? My most intensive use will be photo editing using Lightroom/Photoshop, I won't be using the machine for games, not got any on my current windows machine and don't intend to start. There's a £300 difference between the two configurations. Dunmail PS. What's with the "+1" at the start of some posts? Not seen this in other non-computing forums.