I use tube talons in both sizes. But, as I'm a stark opponent of plastic, I'm getting leary of using them because in all of these new homes.....the tube talons are snapping off of the lines they are holding.
The constant temperature variances makes the plastic brittle. Too often I come into a home and see where half of the lines as hanging down as a result. Also, if the joists are uneven along the bottoms, those tube talons have a nail's length of adjustment and most bang them to the joist which pulls the piping upwards, putting strain on the talon. Easy to use though I'll admit.
Those plastic j-hooks are great as well, haven't seen them break as much as the tube talons.
I use those copper J-hooks but those are clad, not true copper, otherwise they'd bend over in hard wood instantly.
I'm switching to those pipe hooks they use for gas lines with the rubber dipped on them.
I'll just go to HD and get a tennis ball can of "rubberize-it" rubber and do them myself. A great deal cheaper that way.
If you all are speaking of the two hole strap, I never use them and the copper clad is always so thin that you'll start seeing corrosion where the strap is in contact with the pipe.