I used to shoot a J frame extensively and tried many grips.
My favorite is actually both wood and Hogue -- their hardwood no finger-groove grip.
My second choice is Pachmayr Compact Grips (the ones on the top revolver in the picture above). With these the design is pretty good, but the quality is terrible.
I tried many other designs, some of which were quite costly but the cheap Pachmayr and simple Hogue designs were best. I found that finger grooves are awful, and that fact alone ruled out a lot of options.
I still shoot revolvers, but not jframes. And I still prefer no finger-groove grips exclusively. I have some wood Hogue that are the best. I like the look of some Ropers I have, but I'm undecided about whether they're having a detrimental effect on my performance and whether I can adapt to them or if I should just stick with the Hogue.