Brad,
I have had one of most every bent. Some thoughts:
-Like the others said, you have to test ride them. And ride them more than 5 minutes or you won't really get a feel for the ride comfort.
-I don't have any trikes right now, but I love them. I've had many brands but think I'd recommend the Greenspeeds over anything. I might want to try a Cattrike too.
-We had a BikeE. It's not really something that I think you would ride much if you really want to ride. There are many better choices. Watch the For Sale sections at bentrideronline.com and the hostelshoppe.com