poor circulation- sleeping bag?

Well, the WM bag is available in 5'6, whereas the Montbell one is up to 5'10" if I am correct. In that sense the WM would be a better fit lengthwise and you would have less space between your feet at the end of the bag, though you may want to fill that space with clothes. The WM bag is also much lighter and is currently on sale at http://www.mammothgear.com/ (although it is not marked off, they say that all items are 20% off). I would also advise to wear down booties for your feet!
Best,
Sven

Don't forget, the monbell bags have that feature at the foot end where there is a toggle so you can effectively shorten the bag.

Still don't know which bag would be better though.

i think i'm going to go with the montbell, and maybe get the down booties from feathered friends for extra warmth when needed…. with the eight inch baffle closed it would bring the bag closest to my size and have an extra down pillow for warmth….

thanks for the input. i'm pretty excited about down boots that i can wear around camp too!

Melissa, if you have been diagnosed with actual circulation problems then please forgive me sticking my nose in here. I was just diagnosed with hypothyroidism (mine is caused by Hashimoto's Disease), and one of the major symptoms is intolerance of cold, which can be mistaken for poor circulation. Hypothyroidism is much more common in women than men, and it's worth at least mentioning to your physician. i am waiting to get the correct dosage of synthetic thyroid hormone, and i'm excited to think that maybe i won't be so achingly cold on my future backpacking trips.

i haven't really looked into hypothyroidism… I've been diagnosed with Reynold's Phenomena, which is not as severe i gather… as far as i understand, R. Phenomena tends to pull heat from the extremities in an attempt to warm the core- kinda of like a false hypothermic reaction. it's been a long time since i've talked to a physician about it, i just deal as best i can.
thanks for your concern.