Yeah, I've had good success with my Trem-Setters. Installation isn't all that diffifcult and when correctly adjusted and set-up they work as advertised. Here's a series of posts I made in another forum a few years ago that demonstrated how well my Trem-Setter worked for me...

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How much a note goes flat while bending another string depends on a number of things. Often it is no big deal and is barely noticeable, but (for me anyway) there are as many times when it is obvious. It will depend on what strings are involved, what frets are involved, and of course how far you bend the string. I tend to do a lot of this sort of thing when I'm soloing so I have more opportunities to notice a note being played flat as a result of bending another string.

As an example, listen the mp3 that I made below. This clip, made with one of my Strats that does NOT have a TremSetter, is 2 minutes long, and during that 2 minutes I count 9 such times where this occurred. Of the 9, only 5 of them bug me. Of course, on 2 that don't bother me, I also pull off of the bend just before hitting the other string, minimizing the problem. But listen to the bends at 0:57, 1:01, 1:02, 1:31, and 1:45. The note played following the bend is flat enough to really bug me. Particularly, those at 1:02 and 1:31 turn my stomach. And 1:31 would be even worse if I had actually pulled the bend up to pitch in the first place. Maybe some won't hear it as much I do, but it really does bother me.

http://marksmitchell.home.mindspring.com/Custom54.mp3

Now listen to the mp3 that I made below, this time with one of my Strats that does have a TremSetter. Just knowing that I have the TremSetter puts me at ease and you will hear that in this recording because rather than just doing these bends occasionally as I did above, I will often group them together in multiples. I do this 8 times in multiples ranging from 2x all the way to 14x. If I know it's going to be in tune, I don't concern myself with it. In this 5 minute recording, I do this type of bend about 60 times. Listen particularly to the multiples I do at 0:41, 1:22, 2:25, 3:29, 3:48, 3:58, 4:14, and 4:56. They are all in tune because of the TremSetter and that's why I will do them in multiples if I want to.

http://marksmitchell.home.mindspring.com/HGold3S.mp3

A fantastic little gadget the TremSetter is. The only downside to it is that you have to get used to feeling the little notch at the neutral setting when using the tremolo. A small inconvenience considering what you get.

Hi 357mag: I must admit I'd never actually handled a guitar with a Tremsetter till I got together with Forum user Tremolo Arm recently and had a little go of one of his Strats that has one fitted.

I certainly see why many people don't like them. You can feel a sort of bump as the trem returns to its "zero" position, a little like a center notched control knob. Potentially quite uncomfortable if you use your trem for a bit of shimmer both sides of the note.

On the other hand, Mr Tremolo Arm fitted it because he is so frustrated with the unbent note detuning when he does unison bends - presumably the disadvantages of a normal two- or six-point trem of which you spoke. Mr TA feels the Tremsetter is the lesser of two evils in that situation. He also feels it aids return to pitch after wammy use, which is an issue he is having problems with.

So, horses for courses...

Cheers - C

(PS: I'm only reporting this because I haven't seen Tremolo Arm around the Forum recently. If you're reading this, TA, apologies for speaking in your place. And BTW, that nut is not forgotten...)