I am FINALLY moving into a larger design studios and we are taking on two assistants and 3 interns to work with us. I currently have a 24" imac, a 27" imac, a mini, and two macbook pros. I also have another 27" imac on it's way. The 27" imac is staying at home for when we do some work from home, but the others will be in the studio. I can't expect the assistants to work on a laptop, so I need to buy at least two more computers in the near future. and wanted to know what you guys suggest. Obviously the goal is to make this as cost effective as possible. These will not be the 'workhorse' computers but will need to run Adobe CS4/CS5 but no video editing. We do graphic design, website design and photography. We do not need a ton of storage because we will be keeping a lot of the work files on a server or on a wireless hard drive.. The most important part, i guess, is computing power. It needs to be able to keep up with illustrator when doing large files or adding gradients, etc. I guess what I am saying is, I don't need the newest this year model, but what is the oldest model I can go without giving these people a piece of frustration ridden garbage. Also, does anyone have any good connections with some used mac dealers or mac re-builders out there that you can give to me??