I have both the H501w and SC50w+. Both very good. The H501w I've used handheld quite a bit. It's awesome for close up stuff, and as a personal task light, but no throw at all, so a bit limiting. Love the light but wouldn't want to make it my only light due to lack of throw, although it's fine for things like navigating around the house, walking up dark stairs, etc.
The SC50w+ has some great features. It's a little powerhouse. I love the super low low, the UI and the spacing of the modes is pretty good. The + UI is a bit more refined and slightly improved over the predecessor SC50 models, imo, especially on 14500s.
My only criticism really is with the beam and the tint, not that they're bad, it's just a personal preference thing. I would prefer a little less yellow tint wise, although it's really quite OK, but more importantly, I would prefer it if the spill was a bit tighter and brighter and the hotspot a tad bigger. With a smoother transition between a bigger hotspot and a tighter brighter spill, it would be a lot more to my liking. But on the other hand there are times when the super wide spill is useful.
Overall it's still a great light, especially for its size. I leave it in candlestick mode on my night table running on the lowest mode all night as a night light. Since it has something like 20 days of runtime in that mode, that's no problem at all.
And it's really comfortable in the hand, with the side click button. It does tend to turn on in my pocket if I forget to lock it out, however, I usually carry it hooked by the clip onto a belt loop of my jeans where it rarely turns on by accident.
I'm just a bit spoiled by the perfection of my LF2XT's tint and beam.