Which non-DSLR camera for real estate photography?

Thinking about doing architectural photography, also factory interiors showing industrial processes.

I use an Olympus XZ-1, and am shopping for something similar with better high-ISO quality. Over ISO 400, the XZ-1 isn't too good.

Must be a non-DSLR ... I want to be able to use the flash at any shutter speed.

Fixed lens would be best -- a 24-to-100 sort of zoom. Bright, no worse than f/2.8 at full tele. A good sharp lens. Would like to avoid interchangeable lenses if possible.

More than my current 10 MP... I'd like more room to crop and still be able to get a good 8x10 at 300 dpi.

Must have on-camera flash, and a hotshoe... plus, a 'Fill' flash setting along with 'Auto-flash'.

No need for an EVF or OVF.  Just a bright LCD screen, and a clear, visible histogram.

Lastly, full PASM controls. I use M a lot.

So far, the new Olympus XZ-2 comes close, and would have the advantage of familiarity. Any other ideas?

--

Jonathon Donahue -- Olympus XZ-1 tips at http://jon404.com