Very generally speaking:

-Bigger surface tail,more down angle,longer fuse = more stable foil (in pitch), slower, less turny (in my experience they give a kind of fixed radius turn).
Easier to get up on foil, more front foot pressure as you go faster.
Easier pump but with less glide.

-Tails with winglets, curved or V shaped (viewed from front) = more directional stability (yaw).They act like a rudder.Flat tails feel "looser".

If you are a beginner i would go with the standard tail for that front wing,and play with shim angles (towards less downforce).
When it begins to feel too "locked in" try smaller size,or chop the one you have.

I and few others have mucked around with many tails and shims etc and they vastly change the performance of the same front foil. Infact I am now of the opinion they are just as important.