Make sure it has sufficient cooling..... I've got a decent laptop, but it tends to overheat since it hasn't the cooling that deal with the cpu being under constant stress. I would recommend a good gaming laptop with a fast cpu and a good amount of ram and one of these cooling fans that have a turbo or something like it.

Artwork and 3DToons items, create the perfect place for you toon and other figures!

http://www.renderosity.com/mod/bcs/index.php?vendor=23722

Due to the childish TOS changes, I'm not allowed to link to my other products outside of Rendo anymore :(

Food for thought.....
https://www.youtube.com/watch?v=pYZw0dfLmLk