cliffpatte
Speed camera anarchist
The shake reduction is worth four stops, but I guess a tripod is cheaper than the difference in cost.
I'm not a Pentax guru, but this also applies to Nikon and other manufacturers anyway. Shake reduction is only really worth a stop or two if the subject itself is stationery. For candid or street photography it isn't really worth anything at all, whereas compact size is more useful in these cases.
I'm surprised Vuk wasn't asking about how good the new viewfinder is compared to the iST - The viewfinder is a lot more important to me than almost everything else on a camera especially when manually focussing.