The eternal body/lens question
I really like the K-r, which can be had for $649 with the 18-55 lens or $630 body-only (go figure). That would still leave you $350, more or less, for a prime. I notice the 40mm is $30 more than that new ($380). I'm sure I could be entirely happy shooting with the K-r for a year, but that's me. I'm not inclined to go out shooting in the rain, snow or extreme cold any more, so the lack of weather sealing doesn't bother me. The K-x is even less, leaving you more for a better prime, and I tried one out, but I just couldn't get used to the lack of light-up focus points.
Now, if you just want to shoot black and white and don't mind the lack of a viewfinder, you can't really do much better than the Olympus or Panasonic micro 4/3 cameras, but using the LCD screen all the time begins to annoy me. Olympus has a grainy black and white filter that's really fun, and Panasonic has an exceptional black and white engine. It seems to me that somebody has the EPL-1 for a giveaway price, but I can't remember where I saw it. Then you could just bank the difference and start saving for the Pentax system you really want.
|Mig-17-1 by bbmach|
from Low Pass
|Rotting Gracefully by Mond|
from Natural Decay
|attic by wgjohnston|
from In the attic, or in the basement!
|Ox Bow Aspen by McFrost|
from cell phones - nature photographs