My last batch was 900fp from Speer...it works great, but I've since read some skepticism about very high loft down:
- Some folks claim that you can't even get that high w/o special processing - i.e. "tricks" to get a higher score. These special lab conditions won't be replicated in the field. Therefore, very high loft down (like 900) may not actually perform better than lower ratings (~750) because it absorbs humidity so much quicker, so it loses a bit of loft in the field, which means you'll have to overstuff the item to get the same performance...which means there really isn't much performance advantage over the 750-range stuff, anyway.
Not knocking Ed's stuff - like I said, it works great - but at that price my next purchase will be from
www.hungariangoosedown.com. IIRC, it was 1Kg for about the price of 1 pound from thru-hiker or Ed.