There are no real unbiassed reviews (especially with the Canon-Nikon religious zeal).
All the major brands are good, but some general tips can be given:
- get a 35mm SLR (there are others, but they are pricy)
- get a camera with a metal lensmount (to hold heavy lenses better)
- best get a camera with aperture priority and shutter priority modes, and not just a bunch of program modes
- try the camera, try several models in the shop to find the one that best fits your hand. Can you reach all the controls comfortably?
- For aviation work, you'll need a good telelens (most people use zooms for flexibility). 70-300 or 100-300 is good for most locations (though you'll always long for something longer). The 28-80 or similar that comes with most cameras is nice for closeup work or non-aviation shooting, but not usually of very high quality (though not real bad in many cases).
- avoid superzooms (28-200, 20-300 etc). Optical quality is quite poor, and they are slow
- Until you get a filmscanner, you're stuck with printfilm. Fuji Superia (Reala) 100 is good, or Sensia 100 slidefilm. Both won't break the bank either.
- Get a high quality camerabag. Lowepro for example makes very good ones. It'll save your equipment!
- I use Skylight 1A filters on all lenses. Many people prefer UV filters instead. They protect your lens and reduce haze a bit.
- Nikon F80
- Cosina 100-400
- Cosina 19-35
- Nikon 28-80 AFD
- Lowepro Nova 5 camerabag
- Minolta X300
- Tokina 70-210
- Kiron 35-70 (spare)
- Kiron 28-200 (spare)
- Minolta 50 f/2.0
- Minolta 35-70 f/3.5
- Minolta system camerabag
- Minolta Scan Dual II filmscanner
- Minolta binoculars
Good websites are (among others)