Unfortunately, discovered that the PowerAngle frame has a crack in it, near one of the upper grommet holes. My stringer said that sometimes a crack can be repaired with fiberglass, but I am doubtful.
I still have a Head Metallix, freshly strung with PowerMaxx natty gut, that I can play with. I am also planning to restring the Vortex 108, see how that plays. If it is as soft as the worn-out MSV Hex, should be OK.