Markt,
Based upon past marketing strategies, Pentax is very likely to offer the K-x, K-r, K-7 and K-5 for sometimes.
- The K-7 and K-5 are WR. If you intend to shoot outdoor in the rain, that would be an advantage.
- The K7 is an excellent camera and its weakness is low-light conditions. If you shoot outdoor, the K-7 would do great.
- How often do you intend to use your camera? A lot: I would then consider the K-7 or K-5 that are semi-pro bodies. Not too much, I would consider the K-x or K-r that are entry level.
- Your camera will be as good as your lens. "Good glass is worth every pennny". Consider which lens is best for your usage. It is worth to consider the lens(es) now before you invest in the body, and to order at once the basic setup that you need really.
Ultimately I would strongly recommend that you try the camera bodies in your local store, possibly with the lens that you intend to buy. You want to feel good with the camera in your hand. The K-x and K-r bodies are very similar, very close and well suited to small hands. The K-7 and K-5 have the same bodies and it is really a great body with va ery nice hand grip. I tested both the K-x and K-7 and I prefer the grip of the K-7. Everyone is different and your own feel is the most important in relation to your decision.
Hope that the comments will help...