Alot of good advice here on this thread. I just like to stress that running something popular at your track and LHS is extremely important for parts and set up help not to mention having to borrow a part of two when racing at local club races. Hang out at the track and talk to people, see what is running well and narrow it down to three. Come back to this forum and tell us what you like and we will try to give you the pro's and con's of each. Good luck!