I have HKS, Comp 1 and 2 and Variants, and can use them equally well, but when all is perfect(with me that is), the Variants are FAST. I've heard that Comp III, and Jet Loaders will dump if dropped. I had asked Pat @ FX about Variants. Supposedly, they could dump if you drop them exactly upside down, on the handle. They even make a little rubber cap, for the end of the handle/grip, that eliminates that. Believe me, I have literally thrown my SL Variants down trying to make them eject, never happened, with or without the rubber cap. I have some of the caps, I use sometimes, they make a nice grabber ! I have heard of HKS's falling apart unexpectedly, and Comp 1 and 2 falling apart, so they all have problems. I've also found the "wiggle" in the wiggle versions of the HKS annoying, such as for the .44. But frankly they all accomplish the same thing. Heck, I've used all 3 brands at the same time before, during a stage, once it's in my hand, my hand knows what to do !