The biggest problem I see with with the 5 Star or, HKS, for that matter is they're painfully slow..I have a couple 5 Star for an LCR and while they work, (I did have to take them both apart and do some dremel work)
The Speed Beez are for the range, they don't hold ammo securely enough to be in a pocket or, their own holder for that matter. I tried using them in competition but the ammo would easily get dislodged.
Comp II's or, even better, Comp III's are the way to go for sure but still pails in comparison to Moon Clips.
Send your Cylinder to TK Custom, they'll relieve it for Moons and set you up with Moon Clips, a Mooner and a De-Mooner..
TK Custom