Regardless of what shock mount you get, don't neglect the cable you attach to the mic. Using a stiff cable will negate just about all the isolation you gain from the shockmount. The Rycote S-series tails work fine, but are kinda hard to find. You can roll your own by using a section of thin flexible cable such as is used for lav mics or the inner cables from a snake. Some assembly is required.