I shot IDPA with a 586 (Brazil) and used Safariland Comp III's as my preferred loader. The big knob can preclude the Comp III's from consideration, but the Comp II's aren't any harder to conceal than an HKS.
That being said, I, too, carry a revolver and have found that speed loaders, for anything other than a J-frame, are too bulky to easily conceal, so I use speed strips. Pocket space is at a premium with me, so Simply Rugged makes a great dump pouch that fits around your belt. It is relatively flat, doesn't interfere with getting your hand in your pocket - if that's the location that works best for you. They even sell the speed strips too.
As far as speed loaders go, here is my assessment of what's out there - this is strictly my opinion - YMMV:
HKS and 5 Star - fine for general range use. Requires two motions to load cartridges - insert/twist. Relies on gravity to chamber the rounds, so the muzzle must be pointing down. BTW - 5-Star release knob rotates the opposite direction from the HKS loaders
Safariland Comp I & II - Better for carry applications where concealability and speed are a concern. Just requires firm insertion to release the cartridges - no separate twist motion. Release button bears against the extractor star to release. Still relies on gravity to chamber the rounds. The Comp I has no top knob and must be grasped by the sides. The Comp II has a top knob making it easier to remove the loader from the carry pouch.
Safariland Comp III and Jet Loader - Competition style speed loaders. Single motion (insertion) to release rounds. Loader is spring-loaded and pushes the rounds into the chamber - does not rely on gravity. Large top knob for easy grasp and removal from pouch (not suitable for CC).
Dade & SpeedBeez (Centerfire) - both of these have a coil spring, around the circumference of the body of the loader, that retains the rounds in the loader. The top knob pushes the cartridge rims past the spring into the chambers. Prone to losing cartridges if dropped - not real positive retention.
Variant SL - I've never seen these used, but from what I've heard these were excellent. Unfortunately, it appears that the lone importer for these is no longer bringing them into the country. Recently Variant loaders are either being imported again (different mfg.) or are being made domestically – not sure which, and haven’t seen them.
The loader you choose may be dependent on application (comp v. carry v. range) or availability of a particular loader for a particular cartridge/firearm combination, so optimum applications may not always be achievable.
Adios,
Pizza Bob[/QUrounds
I tried some of the SL Variant speedloaders when they first hit the US. I read all the good things about them and decided to try them. I found that they don't hold the rounds as steady as Comp II's. Especially with the .357's there is a lot of the round sticking out of the body of the loader. I always practiced loading without looking at the gun/loader. Yes it is a little faster to visually watch the rounds into the cylinder, but what do you do if reloading in the dark, not to mention taking you eyes off threats. Now how this is affected by the design of the SL is when the nose of the rounds contact the cylinder and aren't perfectly lined up. With Comp II's an ever so slight turn will drop the rounds into the cylinder. This works great because the individual rounds are better supported. With the SL, the individual rounds shift around a good bit. Another plus listed with the SL is that the "cant" of the individual rounds can be adjusted in th loader. I tried adjusting mine and honestly saw little benefit. Also, there were no duty oriented pouches at that time for them, so that was another strike. I started making one, but gave up when I didn't find any big advantages. The overall length is close to Jetloaders.
I have wondered if replacing the spring on a Dade with a rubber O ring would help holding rounds more securely but not make the rounds too difficult to push out. I need to dig up some of the ones I have and give it a try.
I apologize for any drift from the op's thread. And if anyone is a fan of the SL design, no offense intended.