I bought this fitting
from Tractor Supply. I can hook up my two burner Brunton stove and a Woodland Power stove to a bulk tank, even though they both use different fittings. I leave the hose attached to it, and store it inside the stove...nice and compact. A lot less bulky than the trees, though I don't need the LP lighting..... I went to LED.
It's cheaper, but with the Y-connector, you have to have two appliances connected at all times.
The new ACME (external threaded) fittings have a plunger valve inside that only allows propane to flow when an appliance is attached, so you can run one stove off of a splitter, and leave the other empty, it will not leak.