I'll second the laptop. I've been touring around for a while with a MacBook Pro loaded with BFD2 and a lot of other software. No Problems so far! (As he knocks wood) You just need to make sure it is up to the task.
I still use my Receptor, but it has been modified to Komplete5 (in addition to BFD1.5). I am using that with my Mallet KAT for shows, while I handle the majority of the drums and extras through BFD2 in the Mac.