As i'm sure has been brought up here the basic Macbook which i currently use no longer has a firewire input. This is a problem i haven't had a problem with as an LE w/MBox home recording system. But now that i'm looking for work a higher level of professionalism is required in my home mixing and recording. I am looking to upgrade to an Imac 21-inch which i hope to get for a bargain used of ebay *fingers crossed*. My big question for you is whether it would be cheaper to stick with Pro Tools 8 and get a digidesign firewire rack interface or upgrade to pro tools 9 and get an interface from a more affordable company, there are pro's and cons to both of these and i keep getting different opinions. Thoughts? and any other tips on upgrading from amateur to more pro home systems at a budget would be much appreciated.