Phantom 45 Sleeping Bag

Late to the Party, but the Mountain Hardwear Phantom bags are no longer a good value proposition (not to imply that they were before), but you can get a Western Mountaineering Kodiak MF (Microfiber) for $850 or the Storm Shield Version for $985. The Phantom Windstopper 0 degree starts at $1,100. Western Mountaineering is made in the US and so some of the tariff-related inflation is not hitting them as hard, making them a better value proposition. Not to mention Western Mountaineering makes the best down products in the world. Other folks have mentioned Gryphon Gear. Another awesome option. You may need to wait a while to get one though. Feathered friends is great too but I think Western Mountaineering is amazing. My recommendation, Get a Kodiak MF. The Microfiber fabric may look unassuming at first, but it is incredibly durable, tightly-woven fabric with excellent weather/water resistance and it breathes super well, critical for multi-day winter outings. I have a Puma Storm Shield and while I love the fabric and the fortress feel, a laminate fabric like that takes a long time to pack into a stuff sack. It just traps air like a balloon. The microfiber is a dream fabric. A proper microfiber fabric where the filament count is equal to or higher than the denier of the fabric.

The difference between the Phantom and the Bishop Pass is weight - they're both down bags, but use different fill powers to achieve the same temp ratings at different weights. Phantom -18C weighs 2lbs 10oz and the Bishops Pass -18C weighs 3lbs 2.1oz. Not a huge difference for the price, but if weight is a major concern it could be worthwhile. FWIW I've got the Phantom in -40 (non goretex), -18 and a Ghost Whisperer -9 and they're great bags. My wife has the -29 Lamina and it's fantastic, just heavier and bulkier than the down offerings. I wouldn't hesitate to get the Bishops Pass if it fits your budget and you don't mind the few extra ounces. You can use the extra $$$ to pick out something else on their website.