I don't have either, but I hear Sims is the way to go. But if you have a newer good quality bow, you really don't need to spend a lot on a stabilizer. The new bows are dampened very well already. I have a Hoyt X-TEC and bought a low end stabilizer with rubber inserts and it has no noticeable recoil or vibrations.
The Sims and the like are more for the older bows w/out big time recoil and vibs. They will tell you that everyone needs one.
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