If you are a flat hitter, not sure you would get much benefit from any poly. Tour Bite is harsh. Never played with Poly Tour Spin but did play with Poly Tour Pro yellow. Was ok, nothing special. Lack of feel and spin. Can't say much about tension maintenance yet. Only played with BDE for 4-5 hrs. So far so good. The polys that stood out to me in chronological order are Lux BB Ace, Cyclone, Ltec 0s/4s and now, BDE. These are/were special strings.