I wondered about what considered a location as my collection is one per Vegas casino and then one per other Nevada location. I have taken to simply going for one from every different location on a chip, so I have Las Vegas and North Las Vegas as 2 locations, and quite a few variations from the Tahoe area for example (South Side, Lake Tahoe, Crystal Bay etc etc) which some guides show as one location. So if a chip ever comes out with 'Paradise' on it then I would consider a new town for my 'one per location' collection, although would probably also include in the 'one per Vegas casino' as well. I don't consider Henderson as part of Las Vegas, but no doubt some do - just have to draw our own lines I guess as to where is where!!!
Thanks for the info
Jason