Dave Walters
Double Eagle Member
Excalbur = XXX
Force = Blitz
Destroyer = Riot
Wraith = Halo
Teebird = Striker
Roadrunner = Vision
This is how I see them.
The XXX is almost the same mold as a firebird. Considerably slower than an Xcal. maybe a tad more stable.
I heard a new Opto Blitx is overstable so I am guessing its stability is between a force and a xcal