Evening all. I'm looking for some Mac-buying advice for my guitar-obsessed nephew. He'll be using his Mac for all the usual stuff - word processor, email, internet, music, movies, basic photography stuff, etc - but more than anything he wants the best Mac possible for recording himself playing guitar (through Garageband, or whatever other programs might be available). He has already tried out my iMac by using a basic 1/4-inch/1/8-inch cable to plug his guitar in to the audio-in at the back - it worked fine, although the sound quality wasn't great. I think there are better quality cables to buy for this (Griffin, iMonster?) and some interface gadget type things confused that claim to produce better quality sound, but does the actual Mac itself make a difference? eg Would a Mac Pro/Macbook Pro produce much better quality sound than an iMac/MacBook, or is it really only the software/quality of cables that determine this? Any advice at all would be HUGELY appreciated. There are some amazing deals on the refurb section of the Irish site at the moment so he's eager to pounce! Many thanks.