Yeah, the Pentax is a toy, but it's a toy that I like, as long as it can produce pics like these
Besides, it (a Pentax Ds, similar to the DL) felt the best when I tried (including C/N/KM/O ones) during the Sitex Show.
All these dSLR cameras are good enough for us amateurs. It's just a matter of personal taste I guess.
My suggestion is go to a shop and try out these cameras by yourself, choose the most appealing one (to your self, not the salesman). As to lenses, you are not going to need more than 5 (mostly), and I'm sure you'd be able to find these 5 lenses sooner or later.
Cheers and happy shooting.