I had a long dalliance with Jordan Troopers - I do have a pair of black plastic ones, in addition to customs from Herret's - but my hands simply aren't big enough to use them to best effect. (At one point I decided that the smooth Miculek grips would be perfect - Jordan Troopers for regular-sized hands - and they turned out to be possibly the worst grips I have ever used. C'est la vie...)
I can use the big S&W target stocks, and think they look great, but they chew on me a bit and don't do anything for me in either the speed or accuracy departments.
Finger groove grips have always been atrocious for me. I have never found a pair that had the grooves anywhere like the right place, and in fact I usually find that the "peaks" are exactly where I would like the valleys. A great deal of my shooting, though, has been done with a "sort-of" grooved grip from Pachmayr. This one has only one groove, meant for the middle finger, and is in exactly the wrong spot. The "peak" ends up directly under my ring finger, but I ended up using it as sort of an index for finger placement, which may well have helped my consistency.
In the end, nothing fits me better than Magnas with an adapter, and these days that is what goes on just about any gun which will accept them.
"Dark Troopers" on a Model 19 (original Don Hume Jordan holster and belt)
Finger groove grip on 686
A new pair of Magnas on an old gun, along with a rubber Pachmayr adapter