The boost is fine in the Envy's top end, you just gotta really swing the kite. I don't love this kite for transitioning tho. As for the max-flow, if you manage to break the cap free from the tether, it is extremely difficult, next to impossible to reattach. I do like the bottom end of the 12m and its characteristics un-hooked.

addikt it if its boost and hangtime your looking for then the ozone edge is in a league of its own ive trialed the bandit and it didnt come close to my edge,nothing has, cant comment on the liquid force, i think aks would have a demo

We have had a few demo days with the Envy and most of the guys have come back saying it jumps big, you just have to be agressive with it. So throw it over your head.

Also when unhooked it luffs well so wake style is great. Easy to learn new pass tricks and it has a good range with grunt.

They also have a good turning speed and good depower so you can throw them around. All round nice kite.

I have had the kites out on demo and have no problems with the valve's easy to use etc, so looks like they will last as long or longer then other brands.

I have 8-10-12 B5 and really like'em
I have not tried that Edge, but I sincerely doubt it is possible to boost significantly better than the B5.
I come from C kites (hadlow pros). Using that C kite aggressive jumping technique on the B5 almost scared me the first time. Never gone that high before

Looking forward to some good old schooling on those kites. Must learn that darkslide