The Butler Creek loader I like, it seems a bit more robust than the others out there, but harder to source.
the Ram Line seemed good but you dont seem to see them around anymore.
I've used the MacFadden one, it works well but I'm worried it is not strong enough, just doesn't feel it.
A nice point is you can buy different magazine adaptors to take various 22 magazines, for the other 22 semi rifles out there.
I don't think any of the above are great for 10rnd mags, but I'll defer to others on that.
MagLula make one that makes it easier to load each round individually, and if it's like their other stuff it'll be solid and work. I've only seen pictures though.