Originally posted by heralu Idecent iso capabilities, decent up to at least 1600. I need it for indoor photos
I did try a KX, but the battery thing drained me....(pun intended).
Well among Pentax the latest K-r and K-5 both have very good HighISO performance - but one is unlikely to find those used - the only other Pentax that keeps up with those two at HighISO would be the K-x (which I see you've tried).
I still think the K-x is the best bet as it is the class leader in HighISO performance - it is every bit as good as the K-r and although not a 1:1 comparison for the Mp it's in the same ballpark as the K-5.
As for batteries:
There are many here who do not have battery problems because they either -
use non-rechargeable/disposable lithium AAs as supplied with the camera.
or use eneloops with a good charger.
Either way depending on the way one shoots - those batteries give well over 1,000 shots per set.
The K-x is very well priced new right now, therefore I would think also as used. So the savings in price would go some way to affording to use of disposable lithium AAs - and I have read they can be bought more cheaply from places like Sam's Club or CostCo?
But with a little care and diligence eneloops with a good charger will also be good (and more economical in the long run) - eg: I use exclusively eneloops (or confirmed re-badges) in my K-x, and average over 1,200 shots per charge - and I do not have battery problems.