The blessed nest is AWESOME for one babe, no experience with twins
I used a Boppy and a My Brest Friend (what a horrible product name!!) but got a chance to use the Blessed Nest when I needed to nurse at a friend's house. I have no idea how it would be for tandem nursing but it absolutely rocked for a single babe. I was soooo close to buying it at the time but couldn't swallow the price when I already owned pillows that worked well enough. I liked it well enough to suggest one even for the times when you're just nursing one at a time.