I'd say, hunt with what you like. If you like your old sight, then stick with it...remember He is a salesman, and wants to sell you new everything.

That said...I like a sight that is:
-solid anddoesn't vibrate or break easily.
-pins that don't bend all around.
-pins that are not too bright, but not dull either. Pins that are too bright block...or overpower...what I am trying to shoot at in the dawn or dusk hours for me.
-easy to set up.
-not rusting is good too.
-and silent. I actually like the sights with built in "harmonic dampners". I have definitly noticed a difference in noise levels using these.