I really don't get this. You want to buy a new camera when free software does the trick?
From the pentax website:
PENTAX is pleased to announce the release of PENTAX Remote Assistant 3, available free of charge to owners of compatible cameras. Remote Assistant allows you to use your computer to control a tethered camera, making it ideal in various studio and special application photographic situations. In addition to standard remote camera operation, Remote Assistant offers functions such as:
* Operational control of 2 or more cameras
* Interval, Timer, and Bulb Timer modes
* Remote User Mode and Custom Functions control
* And more
* K10D (with firmware version 1.20 or later)
OK, then get a canon, does the same thing.