Is there a good website or resource where I can see performance speed tests between the different iMac models? Basically, I'm stuck trying to decide which 27" model I should get for myself, between the three different models. Im mostly interested in speed results between the three models when running photoshop and when editing 1080p video in final cut pro. is the high end i7 model dramatically faster than the base 27" model, etc... those type of questions. if i can see rendering times and stuff maybe it will help me decide how much i want to realistically spend. if one is twice as fast as the other, it may be worth the extra money. but if we're talking seconds here... maybe i would just go for the base model.