RE: Len if you would.................
Nubbb: Shoot them all; but, make sure you're comparing "apples to apples". What I mean by this is make sure they are all the same poundage (preferably on the same scale), make sure they are all the same draw length by using the AMO or "actual" draw length methods (you'll need a draw arrow for this), and make sure you're comparing them side by side (if possible). If you are checking speed, make sure they're done under the criteria mentioned above while using the same arrow and the same chronograph.
Then, and only then, can you really make an educated decision. Sorry, I can't choose a bow for you or anyone else, no sooner than I could pick out your clothes. They all have their positive and negative features. You are the only one who can decide what is best for you.
Good luck.