I've gone through different mic stands in my podcasting career. The traditional on-stage variety works great, but I would catch myself slouching as gravity pulled the mic down while I was podcasting.
Then I bought the Heil PL-2T Overhead Broadcast Boom ($120, also available from Amazon.com). It is perfectly balanced to stay where I put it, and even includes an extra weight in case I'm using a lighter microphone.
The Heil boom arm is intelligently designed with a plastic lid across the top and back for holding the XLR cable hidden and out of the way.
Combined with a shock mount, the PL-2T allows me to move my mic anywhere without its making a sound.