I have posted a simpilar question to iMac owners, but I thought that I would ask Mac Pro owners for their opinions... I just returned this machine: 2.7GHz Quad-Core Intel Core i5 2560 x 1440 resolution 8GB memory 1TB hard drive1 AMD Radeon HD 6770M with 512MB It was sluggish when running Adobe Illustrator CS6 for my business purposes (Technical Illustration). Instead of going for a higher spec iMac (should I really need to?) I'm wondering if a Mac Pro with its up-gradable options may have a bit more longevity and work out as the more economical choice? I think that the problem is due to graphics card performance, but I'm no expert and Apple Care were unable to help as even a Mac mini should run Adobe software?