I would like one that people have used that is a direct fit. One that doesnt need a gunsmith to install it. I have read that dont make a huge difference but they do settle the gun down some. Make it alittle quicker to get back on target.
I can say (even in 9mm) that a "Controlled Pair" (or double tap as some people call it) will be tighter with a compensated weapon. Some of the shooters that I shoot with every week will literally leave one ragged hole in the "A" zone!!
For the average shooter that's NOT worried about shooting competitively in ADPA, I would call it "Gun Decoration".