Here's some photos that describe why I'm staying with Olympus. From focal lengths 14mm FL to 300mm FL, in bright sunshine or low light I can get quite a variety of images. I took these this past summer and autumn. Sure, I'm looking around (like a lot of you) to see what else is out there, but I'm in no hurry to move on either. The Olympus DSLR system, with the kit and standard lenses has allowed me to take nice photos at low cost, for four years now. Please show your photos (if you would like), which might best describe why you also are staying with Olympus. 
Olympus E-500, Zuiko 40-150mm lens, ISO250, F9, 1/1250, 40mm FL
Olympus E-510, Zuiko 70-300mm lens, ISO400, F13, 1/640, 114mm FL
Olympus E-510, Zuiko 70-300mm lens, ISO400, F22, 1/125, 202mm FL
Olympus E-510, Zuiko 70-300mm lens, ISO800, F16, 1/640, 277mm FL
Olympus E-500, Zuiko 14-42mm lens, ISO250, F9, 1/800, 14mm FL
Olympus E-500, Zuiko 40-150mm lens, ISO250, F9, 1/640, 40mm FL
Olympus E-500, Zuiko 40-150mm lens, ISO500, F6.3, 1/500, 106mm FL
Olympus E-500, Zuiko 40-150mm lens, ISO200, F8, 1/320, 50mm FL
Olympus E-510, Zuiko 40-150mm lens, ISO800, F7.1, 1/40, 83mm FL
Olympus E-510, Zuiko 70-300mm lens, ISO400, F13, 1/500, 300mm FL
Olympus E-500, Zuiko 40-150mm lens, ISO250, F9, 1/1250, 40mm FL
Olympus E-510, Zuiko 70-300mm lens, ISO400, F13, 1/640, 114mm FL
Olympus E-510, Zuiko 70-300mm lens, ISO400, F22, 1/125, 202mm FL
Olympus E-510, Zuiko 70-300mm lens, ISO800, F16, 1/640, 277mm FL
Olympus E-500, Zuiko 14-42mm lens, ISO250, F9, 1/800, 14mm FL
Olympus E-500, Zuiko 40-150mm lens, ISO250, F9, 1/640, 40mm FL
Olympus E-500, Zuiko 40-150mm lens, ISO500, F6.3, 1/500, 106mm FL
Olympus E-500, Zuiko 40-150mm lens, ISO200, F8, 1/320, 50mm FL
Olympus E-510, Zuiko 40-150mm lens, ISO800, F7.1, 1/40, 83mm FL
Olympus E-510, Zuiko 70-300mm lens, ISO400, F13, 1/500, 300mm FL