That CHDK project looks interesting! Thanks for the link. My newly arrived A590IS isn't supported yet though.

I'm not convinced that the form factor in the A series is better. My wife has the "ipod" shaped one with her so I can't compare directly, but the new one to me at least feels slightly awkward to hold. Time will tell suppose as I've only had the camera for a few hours. I'll take it out with me today and see if grows on me.