currently we have an Refurbish 3.06 GHz Core 2 Duo We invested over 2500.- of software so far, and have been working an animation film since we got it. Right now, the animation is getting more polish and complex with layers. iMac is froze up often. We use a lot of Illustrator, Photoshop, After Effects and eventually are planning to buy Final Cut. We like to get an out put of 3-6 mins quicktime w/o compression and sound, minimum of 720P resolution. Which Mac is suitable to what I am trying accomplish. + 3-5 years future proof (we are going to invest on sound recording too.) Thank you for all help in advance.