I've got two diamond frame [DF] touring bikes and two recumbents. The recumbents make great touring bikes and there are no issues with hill climbing, balance or visibility/safety. Having said all that recumbents are a totally different riding experience. You'd have to try it out to know if you like it or not. Keep in mind a 5 min test ride on a bent won't really give you a good idea of how you'll feel once you've had it a couple weeks. Most people adjust very quickly to the way they feel and handle. If it works for you the advantages are primarily comfort and having your head in a very natural position to take in the view from the saddle. If you are interested in bents go over to www.bentrideronline.com and ask a few questions - folks there will be happy to help you out.

One of my DF touring bikes is a Surly LHT and it is probably my favourite bike. It would be my first recommendation for anyone looking for a DF touring bike.