I have two laptops I use. One is a Toshiba laptop / tablet, more for demonstrations and presenting, but still has 8 GB and is small, for mobility. Then there's my beast of an ASUS, with 12 GB, quad core i7. It's 17", so it's large, but lets me do pretty much anything I need, and I regularly have upwards of 6 VM's running on it, at any given time, for labs and simulations. The Toshiba was $1100 a couple of years ago, and the ASUS was $1500, a couple of months ago, from Frye's, in Houston, while on a business trip.
~ hayabusa ~
"All men can see these tactics whereby I conquer, but what none can see is the strategy out of which victory is evolved." - Sun Tzu, 'The Art of War'
OSCE, OSCP , GPEN, C|EH