The Sims and the Stealth, at least to my ears, is awefully close. But the one thing I did notice that the Stealth does better IMO, is dampen any vibration. Now, the Allegiance has very, very little vibration from the get go, so the stab doesn't have to work very hard to get rid of what is there.

One of the deciding factors for me at least, is the added weight. I struggled last year with my Xtec and I think it was because I had it too light. I'm finding I shoot much better and consistantly with a little more forward weight to my setups. Of coarse I could have added more modules to the Sims, but as I said before, at 25.00 a pop, that would get quite expensive.