So seeing the recent wheel set sales, i'm interested in upgrading my stock wheels potentially with a powertap hub since i don't own a powermeter either. Roadbike is a Masi Evoluzione, Tri is a Cervelo P2--both stock wheels
Here's my situation:
-bike outside 1-2x/week with the road bike
-indoor trainer 2-3x/week with the tri
-generally race tris 3-4x/year Olympic distance, some sprints

I think i'd prefer to have something to use on my road most of the time, but would still work for my occasional races. I was looking at the Powertap AMP 35/50, or just the powetap 35 rear, or Flo, or i've been browsing for used options.
That said, i'd love suggestions. While budget is less of a deal for me, it certainly is for my wife--so i can't go crazy ;)