AT4050 is common, AT4033's work pretty good, and the TLM103 sounds pretty good in this service as well. Sometimes there's a bit of an HF spike in the 4050 that gives a feedback problem somewhere in th 8 to 10k region, the 4033 and 103 don't have this. But this setup only works at bluegrass levels. In a club or coffee shop, the audience has to be quiet and attentive because you cannot get the volume level up before feedback. It works better in a larger venue, and can be totally frustrating to set up in a space with poor acoustics.
Moving around the mic is interesting, but as the (upright) bass player in two bluegrass bands, it's a bit awkward.