For stock use I'd be looking at a larger sensor compact, or one with a very fast lens: Nikon A, Ricoh GR, Sony RX-100, Oly XZ-1. The Canon G1X has a full size sensor and zoom, fairly rare still (I suppose Leica has one too!).
They are all quite responsive and very, very good in bright conditions. Most have a hot shoe for flash if you want it. The RX-100 fits in a pocket... The RX-100 and Olympus have smaller sensors, and aren't going to be as good at the others with larger sensors but offer zooms in a very small package. The fast lens aperture makes up for a stop of two of high ISO. The Ricoh GR is good value for an APS-C size sensor, but it and the Nikon A are only appealing if you can live with the fixed lens focal length.
But I can't really put my money where my mouth is - I don't own a point and shoot, just a single micro four thirds camera that double as my small and my big camera ;) But it is nowhere near the small size of the RX-100.
I have a 4 year old Sony DSC-T-90 12mp with a Carl Zeiss Lens 3.5-4.6/6.18-24.7 Optical 4x and Steady Shot that I use as a back-up for the back-up for my Sony A-900 and A-35. Nothing is as bad as completely missing the shot. It will produce RF quality images.
I carry the T-90 in a pouch on my belt at all times. I have had to use it several times when a battery has gone dead, in the middle of changing a lens or memory card/stick. It has also been a life saver when that unknown award is being given during a meeting.
I do not have any experience with the RX-100 but I would assume it to be a updated version of the T-90.
70-300mm F/4-5.6 Di USD Lens, and Sony SAL1855 3.5-5.6/18-55 SAM Lens...
I don't know if it qualifies as a point and shoot, but I've got, just got, a Samsung NX1000 for around three hundred with the kit lens and I've got to admit, the little thing takes good pictures! It seems exceptionally small to me compared to what I have been using but I wanted to see what the mirror-less cameras were about. The Ricoh GR looks good, but I didn't want to spend a lot. Cheers!
Honestly I see less and less space for a point and shoot this days. Get a nice smartphone and a DSLR, the smartphone can cover most of what you would do with a point and shoot, the quality you get is from a DSLR. You can start with a basic DSLR like a Canon Rebel, still way better than a point and shoot.
I submitted more than 50 photos taken with the Canon S100, and all but one were rejected for this technical reason: "Poor optical performance due to low lens quality, such as lens fringing, chromatic aberrations, uneven sharpness in focus area." I know you asked which one to use, but I'd say the Canon S100 is one to stay away from.
Quoted Message: Honestly I see less and less space for a point and shoot this days.Get a nice smartphone and a DSLR, the smartphone can cover most of what you would do with a point and shoot, the quality you get is from a DSLR.You can start with a basic DSLR like a Canon Rebel, still way better than a point and shoot.
I'm rarely satisfied with Smartphone images :( That is why I moved to the micro four thirds, good enough to be my only camera, small enough to take skiing, hiking or out to dinner!
The Sony Rx100 and Rx100 II are your best bet for a pocketable compact. If you are okay with a camera that will fit into a coat pocket, any advanced compact digital such as the Olympus XZ-2, Nikon P7700, Fuji X20 or a Canon G series will work. The key is to keep your ISO as low as possible and learn at what focal lengths and apertures your camera will deliver good files, and then work within those limits and create interesting and useful images that buyers need. My best-selling photos were taken with a Canon G11.
I took a look at some lightboxes of photos from different cameras I've owned. The Canon G12 has earned me $269 on DT, while the Panasonic GF1 with a fixed 20mm lens and no image stabilization has earned me over $2,000. 47 images on the G12 versus 111 on the GF1. That speaks to how much different the kids of shots you can do are with a larger sensor. I can get lots of travel and editorial shots with a compact, but they don't hold up at 100%.
I find it interesting as the G12 has a zoom, IS, flash, and even a viewfinder and hot shoe, yet I found it a lot easier to get sellers with the GF1!
I have had 3 Sony Cybershots, and overall the quality of the photos is pretty good. I have had a few photos accepted here taken with those cameras. They are compact and have many features including some manual ones.
A little remark to what Talcaparisylondres posted above. I have dozens of images accepted with the Canon S95 (which is pretty much the same as the S100, a bit older). My AR with this camera is over 90% and my rejections are rarely due to quality of the image. This camera has the same sensor as the Canon G series. It shoots raw which most compacts do not. I would be a bit more humble before blaming a camera for rejections...
Various Nikon Lenses