Rothernberg or coleman propane is best, you can refill the bottles from orange coleman gas bottles which makes it even cheaper!
Vortex propane and MAPP gas have butane mixed in, so will run at a lower preasure.
Silicone is not needed, it doesn't help the magazine orings and it will just lubricate the hop rubber.
Make sure though that you leave your mags gassed at all times, if you leave them empty for long periods they will start to leak.
Madbull adapters are the best, and are still available on ebay, dont bother with the clones, they never work.