Need Help With Choice On Mac Options

[Amathus]

Hi there, just this second registered and hello to you all.

I did a bit of searching before i registered hoping to find answeres to my questions but everything seems a bit wishy washy and cant seem to find clear info.

Basically im looking to purchase a Mac with Logic Pro 7 over the next few weeks and i know very little about them both.

Ideally im looking to get a powerbook to easily take it around with me but still i'm unsure that the powerbook or any of the laptops have enough power to run logic with no issues.
I would be grateful if somebody can point out and tell me exactly what mac is best for running logic and if a powerbook has adequate power to run it.
Will it be pushing it? or should it be difficult to crash it

And in terms of general music production on a powerbook, is it easier or harder on a laptop then a desktop? i.e are laptop soundcards just as good as desktop.

Money is not a massive issue but i was looking at not going over the £1500 on the mac itself

Forgive me if im sounding unclear but i would be extremley thankful if someone can help me!

thanks in advance

[Amathus]

thanks for the informative reply guys.

in reply to your post adrian, yes the £1500 is the price range i was looking at for the mac and i was suspecting that i may have needed to get more ram. Lucklily i have managed to buy a copy of logic pro 7 already from ebay for a very reasonable price so im sorted there.
and in reply to lepetitmartien i will be using logic to make dance music of various genres and for recording my mixing from my decks to them.

just a few more questions to add on too if you can help with those:

1. what did you mean when you said i will need a good interface that includes soundcard? i was wondering what are the options for soundcards with the powerbook, Will i have to get an external one? is that better? how much? i am going to need something that can handle a connection from my decks and mixer so i can record my mixing.
2. I keep hearing of this release of "tiger" and from what i can gather, it sounds like a new version of the operating system, shall i hold out for that or can it be easily upgraded in the future with no problems?
3. what size powerbook is adequate enough to do this all on, is 12inch quite small or is that normal laptop size? and would it be better to use a 15, especially if i might be using it alongside other producers?
4. Whats the difference between combo and superdrive?

thanks again, i may think up some questions later! lol i need to educate myself with macs