Originally posted by Brooke Meyer K5Iis or K3, something with two wheels. Forget this beginner stuff. That's like trying to learn to play on a beginner guitar that's a lot harder to use than a good one.
Skip all the junk stuff and learn to shoot manual mode. Then you have full control. It's 3 things to learn, ISO aperture and shutter.
Entry level cameras make it really hard to control your image or at least make the one you want by burying the essential controls. I spend a lot of time in my basic photography classes helping folks unearth the controls they need.
+1 and then some.
I am no manual-only purist, but many photographers started on a bare bones but fully manually 35mm camera, like a K-1000, and the lack of automation instilled an understanding and gave them skills that made them better image makers. Bells and whistles are great, but the reason I started digital photography with a K-5 was to have fully manual control in order to get the image I wanted to get (through trail and error oftentimes), not relying on a program line in the camera. As a beginner, having control over the three essential points in the triangle, shutter, aperture, and ISO, and gaining an understanding of how each affects the other, and the final result of the image, is what makes the difference between taking snapshots versus making photographs. I'll add that while autofocus is great to have, and I use it very often, manually focusing generally slows down making of an image. In most cases, that slowness allows the photographer to really consider the image in the frame, and to adjust composition and truly identify, and capture what in the frame makes that image interesting. Also, there are times and places where the best AF will not lock onto the subject the photographers desires, so knowing how to manually focus quickly and accurately is a great skill to develop.
I hope the OP will enjoy using a DSLR, but entering into any hobby in a budget conscious way is a good idea. IMO, the K-5/K-5ii option is the lowest price of entry, but if the OP needs a lens, a bundle including the 18-135mm within budget is a good deal. Also, the OP might benefit from looking at the many threads on PF dedicated to almost every lens compatible with a Pentax camera, with hundreds of examples.
In the end, get one good quality lens and body, learn the strengths, weaknesses and quirks of the combination over a few months of routine shooting and I look forward to seeing the results.