Well, if u can't justify the need for a laptop, then u should get a desktop.
Naturally all these people will say desktop since this part is about desktop computers.
But, anyway, if you want to move around a bit, then a laptop could be right where you need it to be.
with a dell $750 off coupon or $600 off, you can get a nice i6000 from dell for around 1000 or less.
or, you could get a $500 desktop that will do everything you want, and more.