Hey,
Very nice machine, but you will have to get a specialised soundcard for laptops...you'll have three options:
1. USB
2. Firewire
3. PCMCIA/Cardbus
Pros:
portability
wireless networking ready
nice big screen
s-video is really really cool (my laptop has s-video, I use it a lot)
Cons:
not as powerful as a desktop for the same money
hard drive not as fast as a normal ide drive
not as expandable
easier to lose or have stolen
screen not as big as a monitor
screen doesn't look as good as a monitor
shorter lifespan (speaking from experience with a pc and two mac laptops; hard drives slow down or fail, screen hinges break, ports get loose, etc.)
more expensive to replace components
no number pad (although you can buy a number pad separately)
no right-click
This will cause a big debate:
While I don't have problems with Macintoshes as computers, the software and hardware for them tends to cost a little more than PC equivalents and are sometimes harder to find. A few months ago I was asked to find a 56k modem and cd burner for a graphite G4 (desktop), it was a REAL nightmare: I could only find one modem that will run under OSX, it was USB and cost $100, it had to be special ordered; you can find PC modems, both USB and PCI, at Walmart for $25. As for the burner...the only one I could find was a Yamaha firewire/USB combo drive, it cost $170; for PC you have your choice of literally dozens of drives that barely break $100, sometimes you can get really nice TDK or Plextor 48x drives for $50 if you look for sales. I am certain that there are other drives out there which work on Macintosh, but when you got to three computer stores and only find one, amongst a ton of PC drives, it makes you wonder.
For audio software, you pay the same price for programs like Cubase or Reason, but for things like wave editors you're stuck with Peak or Spark, both of these cost around $400-$500, while on the PC you can get Cool Edit or Sound Forge for less than $300. There are other professional and semi-professional editors for PC that I haven't mentioned, I don't know of any others for Mac except Sound Designer and Sample Wrench (which no longer exist).
Take care,
Nick