I’ve had great experience buying Montbell from Montbell Japan instead of USA, the exchange rate was extremely favorable and shipping took about three weeks, but I ordered a Permafrost parka (which is heavier than either of your specified jackets- but is amazing,) that was $279 instead of over $500 from Montbell USA.
The Alpine would be a closer comparison to those parkas than the Permafrost, but just a reminder that there are amazing down parkas that can be had for less (and sometimes much less) than Patagonia or FF.
THAT SAID- FF is made in Seattle and fantastic- so supporting them is great. I have friends with Helios and they’re awesome, but my Permafrost clowns on pretty much everything else when you need to dial the needle towards warmth instead of pure weight.