Tech notes:
I've been doing some search on cam stuff lately. As it turns out camcorders are very expensive (for my budget anyway), so after checking into alternatives I discovered that some of the newer smart phones have very good video quality and can do 1080p and even 4K. There's a site, DXOMark, that tests and ranks them (with a point score), explaining pros and cons with imagery. As an example, something like a Samsung S8+ is ranked really good and they're available in various places for $500 or less, used. And of course audio can be wired into a mixer or recorder etc. Just an FYI, as a way to have extra cams without big expense.
Yeah, that's an option. I use my Nexus 5 for my overhead cam for YT vids. Trouble is, we'd need 3 of them.
The cams we got are the Canon Legria HF-R806, which is the Canon Vixia in the USA - the base model or near to it, I think. 250 bucks. FullHD at 60fps, although we're not using them at "full power" just yet. They have mini-HDMI outputs that work without recording and when on AC power (some cams don't). So then all that was needed was a Magewell quad HDMI capture card. That was pricey... But not as pricey as the fancier SDI version.
Real pro FullHD cams start at about $1500, and rapidly rise to 5k and higher. And then you need an SDI capture card, or multi-cam production hardware, etc. Joe Rogan's setup cost something like 30k, and that's just cams, mics, and studio equipment... no puters or panel lighting or fancy desk chairs, and so on.
And Mark, you'll be happy to know that the puter doing the recording is linux with the free OBS Studio. OBS on Windows is kind of problematic.
As for mic, I have a Shure SM7B that is very good (and widely used for audio voice recording), so I can recommend that one.
Added: If you want to consider using wired lavalier mics the Rode Smartlav+ is pretty good based on my own tests. (it has a TRRS connector, so an adapter may be necessary depending on what it's connected to).
The Shure is the one I want for Joe + Niall. Too bad they're 481€ each here! We're using Sennheiser e840's now, which are pretty good for the price, but they're really really basic vocal mics.
The Rode SmartLav+ is excellent. That's the one I use for my YT vids, but the Rode app is only available for iPhones. So, I use our Zoom Cass session recorder for audio. The guys like the Big Radio Mics better though. They're easier to use with our radio show mixer, and they look cool. But not as cool as the Shure SM7B...