OK, I have learned a few things and I appreciate the input. I hve narrowed it down to the follwing in no particular order. Comments on the below options are encouraged, certainly if anyone has mountain sleep time in of them.
Feathered Friends
Lark 10F
900 + Goose
2 lbs. 1 oz
$499
Western Mountaineering
Versalite 10 F
850 Goose
2 lbs
$605
The North Face
Snow Leopard 5F
Synthetic insulation - unspecified
3 lbs. 11 ozs
$200
Mountain Hardware
Phantom Alpine 15F
850 Goose
2 lbs. 2 oz
$550
Mountain Hardware
Phantom 0F
850 Goose
2 lbs. 11 ozs.
$620
Is the difference between 850 and 900 fill noticeable ? Or, is a rate difference of 5F also noticeable ?
Hard to beleive that the Snow Leopard would be close to the warmest ?
Of your list this is the only one I would buy. Western Mountaineering
Versalite 10 F
As for zip I think it is more a personal preference, I prefer a left hand zip and I am right handed
