^^^ Ditto on the INV-6 (which actually work fine for a longer mic; I run them with both my 4021s and my Schoeps with no issue).
As to Greenone's suggestion to just use clips, I think it really depends how and where you tape. Up on a stand, I'm not sure shock mounts are needed as much. However, I do about 75% of my taping off of clamps to balcony rails or poles clamped or otherwise attached to objects like tables, the board, etc. If you get one person drumming on a rail that your mics are clamped to, in my experience, you are finished unless you have decent shock mounts. Now that I run the Rycotes, I've been in situations where I watched my entire rig bouncing up and down as someone drummed away on the rail, and there isn't even a hint of it on the recording.
The Rycotes also fold up pretty small, which is nice. And they cost much less than branded shocks like those made by Schoeps, Neumann and DPA.