I recently purchased a used 
EZ-1 from my local bike store. Here are my major impressions now that I have a whole 10 miles on the bike.
1. You have to steer. The old body english does nothing for you. Steering is key to keeping my skin off the concrete.
2. The steering is lightning fast. With the smaller front wheel a little tilt is all it takes to make corners.
3. Clipping in is slightly more difficult. I imagine this will change as I gain more experience.
4. I can see things so much better. I'm not looking at the 20 feet of road ahead of me. In the recumbent riding position I'm a better observer of my environment.
5. I can really feel the downhill speed build quickly. Way Cool!
6. What a dog it is going up hill. I see this as a minor downside for all of the other upsides.
7. People are very friendly towards the "bent." I let four total strangers ride it yesterday. It is a friendmaker. As an typical Type-A, outgoing, chatterbox, I can now talk to even more people. (My wife's number one beef with me is I talk to total strangers - and they seem to enjoy the conversations.) Way Cool.
8. I can bolt stuff almost everywhere on this thing. And, I do so love to "accessorize" my bicycles.
9. I'll need 2 spare tubes instead of the usual one because of the different tire sizes.
10. My pockets need to be on the front of the jersey now.
Just my $.02 - You're opinions will differ.