If by manual zoom you mean like how an slr lens works, but not an slr camera, your only options are some of the new mirrorless systems or things like fuji x series. None of which are cheap by any means.
Canon s100 can be had for cheap now I bet, since they're on like s120 or whatever. I've got an s110, all the digital on my flickr is shot with it. The 100 is probably barely different and I love my 110. It's actually a pocket camera, seems to have a decent sensor and lens.