I'm sorta/kinda looking for a good one, too! I have used the "el-cheap-o" ones and burned through them pretty quickly.
I'm looking at adding a "quick-connect" propane
outlet to the propane
system on my ("new") Bigfoot
so I can just plug into the on-board propane tanx and be able to do table-top burgers or hotdogs. It will have be to able to have a way to cook bacon on it, (it must have a griddle or a way to put one on!) as I will not even TRY to cook bacon on the stove in the trailer - you'll never get the odor out!
The trick is to get the quick-connect adapters and a long enough hose. This can be done at many places, but I've NEVER seen an RV dealer who can make up a hose to the right length, with the right connectors.
I never use propane at home, though - my deck BBQ runs on Nat gas! It never runs out halfway through grilling a teriyaki T-bone with melted blue cheese on top!!
The little green bottles just don't last. They also seem to leak down to nothing if you just use one for a short time, then disconnect it and put it away - its empty the next time you want it!