carlislere:
The weight of the unit is a factor, about 20 pounds more than the Prism.
For travelling the Mini Meg (even normal Meg), PRISM, Evo and Sport Kiss are all better.
The biggest concern is that it is new. I would give it 3-5 years so they can get the bugs worked out.
The rebreather is new, but the two major parts that require engineering are not:
The scrubber and the electronics.
The scrubber is very simple and probably hard to screw up from a reliability point of view.
The electronics are not really new, as the HH has been sold for a while.
The handsets (housings) will be new, and some code has been added to allow the trimix access
to be locked by a PIN code and some of the diagnostics aren't user accessable anymore.
Shouldn't take 3-5 years to sort out. I'd wait until next year, since none of the HH specialists
(like padiscubapro here on the board) dive the Oh-Tooptima, but they will likely be diving upgraded HHs.
The rest, bags, harness, BC, DSV, tanks and valves usually aren't major failure points.