For the K-r, you could get the 18-55 kit lens, and the 55-300 telephoto zoom. Indoor sports will be a problem, however. You could get the Tamron 70-200/2.8 which is a nice lens, but it doesn't focus very quickly, and niether does the K-r, so that combination might not work out so well. You migth to better with the Sigma 85/1.4 HSM, but you might find the fixed focal length to be limiting.
There isn't much that distinguishes one camera from another, for what you want to do, except the indoor sports, and for that, I'd stick with the Canon.
- The lens is the thing.
- 'Full Frame' is the new 'Medium Format'.
- "One good test is worth a thousand expert opinions." - Tex Johnston, Boeing 707 test pilot.