Mike, the one I have in my garage is pretty good... It is a Sensenich cruise prop..
I think the answer is "what do you want to do". In some of our off-line discussions, you were interested in some speed. You are not going to get much speed out of the borer prop. If you are just looking for out of the hole performance, you may want the borer (or since you are experimental) the pawnee (BAI) prop (this is being discussed on another thread).
For my needs, I am very happy with the constant speed prop. I get darn good out of the hole performance and still cruise along. Of course, many will argue the weight, etc, but if you were to use something like the MT the weight gain is negligible.
I do think a cub is more FUN to putt around in without having to think about a CS prop, but you get used to it pretty quick. I have about 200 hours on mine now.
sj