Why use the torch? Why not? Why would propane affect the taste? I light my charcoal in the ring before I put the middle section on.
I find it quicker getting up to temp since you're using a heat source to light the whole charcoal ring, not just a little bit of charcoal in a chimney...but you're still only lighting the top layer, which is what the Minion method is about. Also, the MM is about getting the charcoal to burn very cleanly, and for the aforementioned reason, the smoke cleans up faster than pouring on out of a chimney.
Probably the best way to light is how a guy suggested to me on another forum. He says to light dead center for :30 seconds and then :15 seconds each at the 12, 3, 6, and 9 'o clock positions. This way you get a very consistant burn, but don't move the torch around trying to light the entire top of the ring. He was probably speaking of lighting a 22.5" wsm, and if you are lighting an 18.5" you might want to only light in two or three spots. I'd either bury your wood chunks in the top of the coals right after lighting or simply lay them on top, mainly on what's not lit.
I use the torch also to light charcoal for my grill. Sunday, I had my coal bed layed out from the day before, and after church I lit all the lump and had it going in no time flat. Use it to burn your grates off if you want to. Char poblanos. Crisp chicken skin. Seriously, there's lots of uses. First came fire, and then came the torch.
MIne still lights just fine and it's several years old:
http://www.harborfreight.com/p...n-igniter-91037.html