Bumping this thread as I'm actually looking instead of just browsing while paying attention in meetings.
Hard to find a Comanche with good avionics (newer than 1990s).
If it's appropriately priced, these days that's not the worst thing. Rip the whole dang thing out and put in a two-screen Axis system, and you have better avionics than anyone, for a pretty reasonable price. In fact, it's almost better to have nothing worth saving now that the Axis displays have so much integrated in them.
Y'all have scared me off of 182RGs, even though I think it'll fit exactly what I'm looking for.
We can scare you off from anything if you let us! So don't let us if it's the right plane.
I think you're probably right that it'd be a great plane for you. Full fuel payloads in the 725-750 pound range, can get off your short obstructed runway no problem, and will go 150 KTAS without a turbo and its operational/mx headaches. There probably isn't a more mission-capable bird in the GA fleet than the R182.
Early Diamond DA40s have less useful load than the 172 I just sold. No idea what the hidden gotchas are on Diamonds yet.
The early early ones (2001-2002) have less interior room and insufficient cabin ventilation. 2003 is when they hit their stride, with those issues fixed. From 2004, they all have had G1000.
Unfortunately, that last one can be an issue because of the way G1000s work. They are certified as part of the airplane, not an STC, so Garmin doesn't "own" them as far as support, the OEM does. That has led to some issues with support especially in the older non-WAAS G1000s that were sold from 2004 up through 2007-8. While Garmin can write new software all day, the OEM has to approve it for it to be installable in the aircraft, and the OEMs don't really care about supporting old planes when they're trying to sell new ones, so new software doesn't get approved much. Our club had a 2006, and it had a GTX 345 installed but couldn't display TIS-B NEXRAD on the MFD because the software didn't support it; we had to get XM WX ($50/mo) for datalink radar.
So, if you're going to get a G1000 model, at the very least get one with WAAS (GIA 63W computers instead of GIA 63) and the Garmin GFC700 autopilot. Or, stick with a 2003 that had steam gauges and then you can put in whatever panel you want. Many of the modifications such as increased gross weight and increased landing weight that came from the factory on the newer planes are available as a retrofit to the older planes.
Most of the "gotchas" on DA40s, aside from the G1000 one noted above, are actually positives. For example, some people complain that you can't see fuel in the tanks when you open the fuel caps unless they're full, and if you want to physically check the fuel level you have to use a funny little contraption that you hold on the wing and connect to the sump. BUT... This is a good thing. You can't see the fuel in the tanks because the tanks are really long and skinny. The tanks are really long and skinny because they are made of aluminum and mounted between dual main wing spars. That makes them very well protected during crashes, and has contributed to the DA40's stellar safety record. So, while it's different and unusual, overall it's a positive.
(Go back and review post 94 in this thread for more, and I'd be happy to share more info about the DA40 if you're interested - It's a really great airplane.)