In reply to CharlieMack:
> As title states.
> Both primaloft one, both just under 400g.
> Unless anyone has any other suggestions? Needs to have two hand pockets, a hood and primaloft one. Needs to be compressible (the main reason as it's replacing a 400g synthetic jacket that doesn't pack down at all).
>
> And ... Go!
I think you might want the Rab Xenon. First of all, they aren't both Primaloft 1. The Rab uses that, the MH uses Thermic Micro TK which some reviewers (eg Outdoor Gear Labs) think is not as good. Second, you seem to be comparing the MH Compressor JACKET to the Rab Xenon X. The jacket doesn't have a hood and comes in a little heavier than the Rab. It is probably a touch warmer. If you want a hood, you have to look at the MH Hooded Compressor, and that is 100g or about 25% heavier than the Rab. Moreover, according to Outdoor Gear Labs, the Rab is more compressible, stuffing into one of its own pockets and easily carried on the harness.
Another thing to consider is how you intend to use it. The Compressor has thinner side panels to dump heat while moving. Of course, they'll also dump heat while not moving, so one question is will this be a winter garment worn while moving or more of a spring-fall alpine summer piece used more for rest stops and belaying.
The Rab hood doesn't really go over a helmet. I think the Hooded Compressor is tight but will make it. The Rab hood doesn't cinch around the face, it just has elastic trim, so it isn't very functional in the wind. The MH Hooded compressor has a drawstring on the hood so it will be much better in a gale.