Okay,

Warning, first of many stupid questions... I am trying to get all my stuff ready for the RC8T. I am by no means a pro and was trying to decide which engine to go with. I think I narrowed it down to the .25 or the .21. I have read a lot of different things regarding the two engines. I am really just unsure of which one to go with. And if I decide on a .21 which number of ports to chose from.

What are run times like between the two? Is there a big difference?
Also which pipe is the best for each engine? Dynamite 086?

Some background:
I plan on running 20% fuel (to stay consistent with my other nitro engine).
Short dirt track with jumps.
Maybe even some parking lot racing.

I guess what I am looking for is something that is an all around good performer that is reliable, easy to tune and creates a decent amount of power.

I have the MGT 8.0 which I can tune decently and haven't had any issues with. Are the GO engines just as easy to tune?

Thanks in advance!