The SOS review of these was interesting.

In a nutshell, they said they were very good - extremely powerful indeed, finally putting top-end Macs
back on a par with top-end PC laptops.

However, they said that they had a frightening capacity to run rather hot, even when not at full whack
(though there was some allusion towards a problem with the thermal paste on the chip, which is solvable
if you don't mind a bit of DIY), and the battery life was quite poor by comparison. Still, I suppose battery
life is unlikely to be a problem for most musicians (i.e. you should be able to plug in, really).

That said, I think I'm still against Macs on principle. Mainly because all Mac users seem so overbearingly
smug about everything.

I'm still quite excited about the idea of a totally FOSS (Free / Open Source Software) setup.