Any recommendations?
Asking for camera recommendation on this forum is often a good idea. However, most of the people who post here usually only have experience with one or two models (the one they happen to own and use) so most of the advice you will receive is basically opinions.
Having said that, from a CHDK perspective, it does not really matter much which CHDK supported camera you use - all the features will work pretty much the same way on any released camera. However, for your application there may be camera performance features that matter more to you. Things like weight, size and battery life will be important. You probably also want something that will shoot as fast as possible. WIthout playing tricks, this is currently somewhere between two and four seconds per shot using things like the KAP_UAV.LUA script. If you anticipate needing to go faster there are scripted ways to do so but getting below one second per shot could depend on the particular camera.
Sorry not to be more specific. If you can live with the two seconds per shot and size/weight then either the s100 or sx260 would be good choices. As the principal author of the KAP_UAV.LUA script, I also have an S100 and know it works well with the script.
