Cheap Used Body for Video

I'm debating that bit. I can apparently get a basic Tascam audio recorder for <$100, which should alleviate that problem and allow me to place the camera further away/in a less obtrusive location, all without worrying about wires, it just adds extra effort on the post-processing side of things.

Not needing a microphone jack opens up the options, and a GF2 would be a very cheap way to dabble in this - <$100 on ebay, if I can figure out how to install the hack. Alternatively, other vendors have used GX7 bodies for $350 or so, which is also quite tempting, as it already includes the viewfinder, and has a more modern sensor if I were to use the camera for stills, as well.

Three more points that I'm not able to get clarity on:

- How different is the video crop factor on all of these bodies? My E-PM2 crops in fairly significantly, leading me to have to use wide angle lenses to get a fairly normal perspective - ie, using my 17mm gets me a field of view that's not too dissimilar to a 25mm for stills. A lower crop factor would allow me to use different glass - for example, a film-era 28mm f/2.8, which would allow me to do fully manual focus pulls and aperture adjustments.

- What's battery life during filming? Could I expect any of these bodies to last an hour with a full charge?

- Do any of these have a recording limiter? I know every body stops at 29 mins for tax reasons in the EU, but how about in the US? I thought I read that my E-PM2 can only record for 29 minutes at a stretch, and that was something I was concerned about as well.