I've had a bunch of cheap ones in the past (usually administrator-assigned reviews) and none were very good (and never got used more than four or five times). But recently they sent me a Fleshlight. Oh, wow does it feel good. (hmm... I really should write that review sometime this week.)
So the Fleshlight is great, and I expect to use it quite a bit. But my hand will still get a lot of use, as it's a lot easier to clean.
Nothing else I've tried is worth bothering with. But the Fleshlight feels amazing. Not exactly "real" .. it's different. But it's damned good. Feels better than my hand, but the trouble of cleaning it up means I won't be using it every time.