This fan looks pretty good → http://www.newegg.com/Product/Product.aspx?Item=N82E168... when in "Power" mode it has a CMF of 82.6. Which while I was looking at all the fans noticed it was pretty high for a 120mm fan. Probably because it uses dynamic fluid bearings instead of sleeve bearings.
I believe anti-vibration corners to be a sales gimmick. Cheap rubber/vinyl/plastic O-rings or grommets are available at any hardware store, and any decent fan gasket will work to do the same. Better to 'customize' a good fan that meets you needs and tastes, than to settle for a cheap one or pay more for one, all for the sake of rubberized corner doohickeys