I was trying to make that decision earlier.. I went with the K-30 because of the newer technology - better processor, better autofocus, better video(even though I don't ever really do video, it's nice to have the option of say, recording my dog doing something cute that a still wouldn't capture.).
After hearing of the K-5 II, I was/am thinking of getting that and selling my K-30.. But I'm leaning towards not doing that because I worry that not as much will have been upgraded in the K-5 II - and also because I've read that the K-5 is heavier than the K-30, which could be an issue for me w/med-problems. I'm also not too convinced that the extra 2 bits of sensor info will make a huge difference. I think I'd rather save the money for what comes after th K-5 II - and save money for when I have to have the shutter replaced. I'll likely keep the K-30 as a backup when/if I do that.
(I found it unfortunate that all DSLR's
will have to have shutter replacements at some point. That sucks!
)