I used green on our trailer and they were readily available at RV parts dealers and propane dealers. I don't see any reason to change. Stove, oven, water heater, outside propane grill... it's easy to see 200k Btu is the way to go.
There even available on Amazon -
Lucius and Danielle
1992 29' Excella Classic / 2010 Interstate
2005 Chevrolet Suburban K2500 8.1L
2018 GMC Sierra K1500 SLT, 6.2L, Max Trailering
Got a cooped-up feeling, gotta get out of town, got those Airstream campin' blues...