An LPG (or MAPP gas) kit + air isn't really hot enough to braze with, but is fine for silver soldering.
I had oxy & acetylene for years but the ridiculous rental cost of the latter and the fact I hardly used it persuaded me to send it back to BOC even though it was 1/2 full.

I now use oxy + LPG, it can do everything the acetylene did except fusion weld steel (that's what the MIG is for )
It brazes joints cleaner than the oxy/acetylene did.
I swapped the old oxy cutting tip to an oxy/LPG one, and counterbored the welding tips to make them work with LPG.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.