I'm intending to take the Alpinism 1 class from American Alpine Institute this summer and I'm looking to upgrade my sleeping bag. There are some differences in price, warmth rating, and weight, and of course intended use.
I suspect coming out of Aplinism 1 I don't need a $700 -20 winter bag. I'll probably spend the next year or two at least just doing 3-season climbs. Here are a few I am considering. I realize they're all basically the same, give or take a few oz, liters, or dollars... But I do want to make sure that whatever I end up with is adequate for getting started in the alpine.
REI Igneo : $240, 19 degree, 1 lb 13 oz, Down, 5.2 liters compressed
North Face Blue Kazoo : $223, 15 degree, 2 lb 9 oz, Down, 8.8 liters compressed
Marmot Sawtooth : $194, 17 degree, 2 lb 11 oz, Down, 7.9 liters compressed
Is this a reasonable set of parameters to be looking at? Do you have any experience with a 3-season? Any recommendations, suggestions, or other considerations?