Just to add my experiences. I've had the R-07 for a few weeks now, and have taped in a number of different situations. As a quick bit of background, I haven't taped any shows for years (previously taping to DAT), but started again after getting relatively good tapes through my iPhone. So, using the R-07's internal mics is definitely a step up from the iPhone. I've also taped a few shows using the Roland CS-10EM in ear microphones. These are ok for quiet gigs, but they completely flaked out when faced with Gomez (heavy bass drum sound). However, this weekend I finally got my new CA14 cardioids and 9200 preamp. Gave them their first try tonight and I'm impressed with everything. The mics and recorder coped with Dizraeli and Moon Hooch, and some of the loudest and deepest bass sounds I've heard in a long while. I could feel my scalp moving! So, with a decent set of mics, big thumbs up. And, you know, as a basic recorder using just its internal mics, not bad - better than an iPhone.
The biggest plus for me is the bluetooth connection to my phone. I rarely have problems with it and I really appreciate being able to control the recorder without having to get it out of my pocket.
So, after the Gomez gig I was a bit worried that i'd bought a lemon. But, I'm very pleased now. It's a great recorder.