Both. The Zoom can be used for field interviews and outside recording and the "studio" configuration is good for doing the show at home. I've been doing field recording tests using a Zoom H4. There was a posting from someone doing a very good interview with a Zoom H4n
and plug-in microphones.
... Assuming your home is a studio. Recording a show in a room with echoes and noises can't be fixed in post production. It will always sound like a small child trying to record a podcast.
This track is not fixable. The echoes are permanent.
http://kozco.com/tech/audacity/clips/EchoSample.mp3
Know how to handle your microphones. This podcast has popping P sounds and other microphone damage. The damage is permanent.
http://kozco.com/tech/audacity/clips/PPopping.mp3
There was a recent posting from someone who discovered his podcast picked up his deskside computer fan noise, but he couldn't separate them because he was using a USB microphone. Oops.
People tend to ignore -- tune out -- everyday noises. Refrigerator, air conditioner, traffic noises, and the dog appear on the podcast and they post here wanting to "filter it out" in Audacity.
Probably not. Those noises are now permanent performers in your show.
The Four Horsemen of Audio Recording (reliable, time-tested ways to kill your show)
-- 1. Echoes and room reverberation (Don't record the show in your mum's kitchen.)
-- 2. Overload and Clipping (Sound that's recorded too loud is permanently trashed.)
-- 3. Compression Damage (Never do production in MP3.)
-- 4. Background Sound (Don't leave the TV on in the next room.)
There is a production consideration, too. We had a poster who started out with a weekly 90 minute show and is now doing 5 minute "flash podcasts" because they couldn't think of anything to say.
Guys like to concentrate on the cables and microphones and push production off until later. Successful podcasts have killer production first and buy microphones later to record it.
Are you the center of attention at parties? Can you make somebody laugh on cue? I'm just sayin'.
Koz