I have two portable leantos. The bushwear that cost a bit to import and the lone hunter which also cost a bit to import. Both are portable but the bushwear for me is just crap. It doesn't pack well, it makes a lot of noise and it is not that light or stable. I don't like having my feet resting on a rung for hours at a time. The lone hunter is quite high and needs the proper safety harness. It also is non adjustable in height, and has no shooting rail.
In the end I prefer either millennium hangon or a lone wolf hang on. But don't come with a shooting rail.