I have converted a Revo, Jammin CRT.5, CEN Matrix TR Arena and a Kyosho Kanai to brushless. Great projects, fun to drive, brushless is the way to go. Brushless will become more and more mainstream, Novak is coming out with some really nice conversion kits, Tekno Racing has a nice Revo kit, and RC-Monster has tons of stuff.
Brushless Jammin CRT.5
Brushless Kyosho 1/8 buggy.