Finding a place to fill a tank can be regional. Back home in Louisiana I had tons of options and could pick up good smoked pork sausage at the same store. In CA, I had two options in town and one was only open during hours I worked. I greatly prefer fill but still have to exchange at times. I agree about not wanting to give up a good bottle but have only once had a problem with getting a bad bottle. I exchange at Lowes or Home Depot when possible (and if fill isn't available) and they gave me another bottle. They also let you bring bottle in to the Garden Section where exchange is.
