Most reliable ultra-compact camera?

I'm about to go on a month-long trip to Mexico and I want to bring an ultra-compact point-and-shoot with me. (My only digital camera right now is a D7000 and I don't want to lug it around on the trip.) My criteria are:

• wide-angle lens (ideally 24mm, though I'd settle for 28mm)

• very small size -- at most 7-8 ounces

• great reliability, as I don't want it breaking halfway through the trip

• cost

• good picture quality, of course

I'd be very grateful for anyone's suggestions; I was originally thinking about getting the Canon S100 but the recent prevalence of Lens Error complaints makes me think the reliability is not there. I'm also considering the Canon ELPH 300 HS. But I'm very open to suggestions for other cameras! Many thanks in advance for your thoughts!