No one seems to have touched on the "feel" of the camera in your hands - this generally a non issue wrt to p&s.
After I had handled the Oly's,Nikon,Canon equivalents to the Pentax K10D(K20 is essentially the same body) and then I put a K10D in my hands - I bought the Pentax - it just felt like a camera of substance compared to the others.
From a budget point of view a 18-55/55-300 kit lens and 50 1.4 is possibly all you will need for quite some time
I shoot exclusively with the 18-55/55-300 combo and the Pentax can do sport imo without much hassle
55-300 18-55
Trust this helps
Dylan