Liquid O2 will always rule the roost.
With the oxycon running a home fill with it to fill tanks lets you use a bigger torch.
Then there is High volume low pressure system, purchased or home made.
http://www.hvlpo2.com/
Im going to do the homefill route and make my own oxygen.
My oxycon does a good job on my small torch and I strictly work boro.
I will have to upgrade my torch in the future to work bigger pieces.
If I had to haul tanks I would be broke, with no money for glass.