We looked at Maules before we bought our current plane, but I never shot out of one. It seems like I remember thinking they would work well for us, but we almost always shoot with a pilot and a photographer.
We almost bought a fixed gear 177, too. Test flew it a couple of times and shot with it as well. We didn't get it because we found our plane which worked better for our particular needs. Many aerial photographers use Cessna 177's for their work because of the strut-less wing. LP Aero Plastics make a couple of different Photo Windows for it that make it easy to shoot out of, so the standard windows are no problem at all.
http://www.lpaero.com (page 54 of their catalog)
I also know guys using 150's, 170's, 172's, 180's, 210's, Super Cubs, Mooneys, Barons, R22s, R44s, etc. Each has it's benefits and drawbacks depending on what type of photography you want to use it for, and if you want to use it for anything else - like backcountry flying for instance. If you want to shoot Orthographs (vertical mapping pictures), check into the feasibility in your location of getting FAA approval for a hole in the belly, or adding a new "inspection port". Some planes came with camera holes as a factory option, and some have stc's available. Others do not and getting approval can be a challenge. We found our 170b and it already had a camera port in it that was done through a field approval years ago when you could actually get the FAA to agree to that type of thing. The 170's also came from the factory with a camera port as an option, but it was located in the back under the pilots side rear passenger seat, which I believe (not positive) makes that seat unusable. But all you have to do is get a hold of the original plans for it and install it, then have your IA sign it off. Anyway, that is something to consider as well.