I'm now using a WP12 torch, with a genuine weldcraft lense kit and clear nozzle.
I ended up with a Flexi water-cooled torch too but it's not a comfortable to use for alloy stuff. Great for cage work though.
Ariel I have an interesting gas setup to which I'm trying.
Pure helium bottle and an argon bottle, a valve setup on both bottles and twin flow meters. The rest is obvious you can adjust your mixture as desired
You'll have to drop past and have a crack at it. Seems to work well.