I've got to say that I like the OS speed the best, but I think these four engines.. (I found on sale right now) have to be the next best thing out. The new Sirio STI, the new Trinity Extech, the new RB WS73 L2G, and the new ninja JX21 are the new bad boys on the block. In fact the new Mugen Ninja JX21 has the same crank as the OS speed...!

check out the sale I found here:

http://www.airlandhobbies.com/catalo...1585242210.htm