After recording two podcasts, I upgraded my basic logitech microphone to the Audio Technica AT2020. The sound quality is pretty amazing, especially for podcasting.
To compare the quality, you could listen to episode 1 of [...] (technical podcast), then compare it to episode 6. I think you will agree that it's significantly clearer now.
My initial sound test did not produce the desired results, but, then I realised I had it facing round the wrong way... that might sound silly, but, the USB connector is in the front, not the back, and when it faces 'the wrong way', the microphone points at you - like you think it might need to.
Turning it around (with the blue led light illuminated internally showing towards you), the sound became very clear and had nice depth.
A tip for recording though, make sure your computer is as far away from the microphone as possible, because fan noise can be a problem, or noise travelling through your desk. I learned to put the microphone on a spongy mouse-mat to reduce any vibration noise and to keep the cable off the desk too.
A great purchase, my only negative point is that it would have made more sense for the USB cable to be at the back.
BitBanter (technical podcast)