I'm a DSLR person, but have a Canon IXUS 60 that I bought S/H for £14 in CEX for when I don't want to lug a brick around.
Can't really advise on a camera as given that I'm currently happy with what I've got, I've not been in that market for a while. But on the subject of shooting B&W, as has been mentioned, don't bother looking for a camera that does it, as any decent image processing software will do the conversion for you.
But a tip here from someone who shot B&W film back in the day. Black & white film is red-sensitive, so when looking at image processing software, make sure that it has the ability to split out the different channels and discard the blue and green during the conversion process. Otherwise, you just end up with a colour photo that has been desaturated as opposed to a true B&W image that has the feel of being shot with film.
Photoshop does it, as does Paint Shop Pro.