I own 617 22LR speed loaders from TK, 5 Stars, and SpeedBeez. TK's takes the upper hand in this one, by far. All of the ten rounds are tightly held in place by the spring, which makes it way easier (and faster) to fit into the cylinder. The all-metal construction gives a strong, robust feel to it; you can drop it to the ground and nothing will happen to it, nor will any rounds drop off the spring retainer which is impressive.
Now, having a set of these TK loaders, I feel comfortable taking the 617 to Steel Challenge, ensuring quick reloads, stable well positioned 22LR rounds while moving, and reliable functioning.
The 5 Stars and SpeedBeez are not bad, they are OK for regular range use, but neither of these will work if you aim for speed-loading rounds under time pressure. Once the rounds are placed in the loader, they significantly tumble laterally, so you have to wiggle the loader around to ensure a proper fit into the chambers before releasing the spring.
EXPENSIVE BUT WELL WORTH IT.
