@ Gigi,
Hi Gigi! Unfortunately, I can't comment on the quality/comfort/etc because I haven't bought a pair yet as it's not in my budget, but when I do I'll let you know. Honestly, I'm kind of hoping that a petite blogger will buy & review it, & I will wear it vicariously through them until I can afford my own!
From bopping about around the web, it seems that the brand, Aquatalia, is of good quality. A common complaint is that they're too narrow in the calf--so what regular-calf-sized-ladies deem an issue may be a boon for us! This and this blogger did a review on their boots.
As for Duo, yes, I've heard of them, too! However, it seems like reviews are mixed so I won't be ordering from them.
Happy browsing!