[Brightcolours]

Brightcolours, just curious - why is the design/styling a plus for the Canon? IMHO Canon DSLRs are more or less shapeless blobs, while the Pentax was designed.
The K-S1 has the AA filter simulator and it should have "mirror lock up" with the 2s timer.

Because the Canon is designed to be functional and more or less ergonomic, where the Pentax seems to be gimmicky with 1980's chinese Audio styling and nonsensical LEDs strewn all over it. I doubt that many will find it attractive, but not everyone has taste (or "the same taste"), and some Pentax fans will like Pentax (Ricoh) stuff no matter what...

The K-S1 does not have an AA filter, and as you know, the filter "simulator" does not work with short exposure times. When one needs mirror lock up, 2 seconds is often not enough of a pause to let the vibration die down (depends on the combination of support, lens weight, lens length, and exposure duration).