[fortun8son]

For tension maintenance, the Signum Pro line is hard to beat.
I'm not sure if OP is looking for other polys or an alternative.

realplayer; Poly in the mains will have less power and more longevity.
Multi in the mains will have more power, comfort, and spin for a shorter time.

My rule of thumb is: If you can break syngut in 4-6 weeks, you MAY be ready for poly.

...and you other guys need to either cool it or take it outside.