Mac users, please chime in!

Right now I have a 2.4GHz Mackbook Pro with 4GB of ram. Working with larger files from the 5D mkII, I've noticed considerable lag.

Now I'm thinking about selling my laptop and purchasing a new 24in iMac 3.06GHz with 4gb ram.

Will this iMac be much faster for editing photos? I also like the idea of a bigger screen (even though I have a cinema display, the extra realestate on the iMac will be great). And of course having more hard drive space will be a plus.

I've been trying to think if portability was a real issue and I think as a previous college student it was... but now that I'm a working professional, I can't think of a time I've needed to lug around my lap top.

What do you guys think? Need some moral support here lol. Thanks in advanced for the comments.

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Migs
http://www.migsvuitton.com/blog