I have been using Sennheiser 421's for tom mics since I started recording a few years ago. They're great mics for toms but they're sooooo big and sometimes hard to position depending on the drummer's setup. My question is, are there any clip-on mics a la SHURE Beta 98 or Senn 904 that are good enough for studio recording? I would also be using them for live recordings, another reason why I'd like to find something a little less cumbersome than the 421. Thanks!