If your trusty saddle *looks* just fine, how do you know if it is worn out? My Sella Italia Trans Am Ldy looks like it always did, but I swear it seems a little more "flexy" in the middle section causing me to "sink" a bit. I have 7000 miles on this saddle with no irritation, saddle sores, etc. I do wonder what a Terry Butterfly would be like, but if you don't have a LBS that carries lots of saddles to try how can you ever be sure? I know mine is "good enough", but how do I find out if something is even better. For example, if I got the Ti Terry Butterfly, it comes in both a gel and non-gel version. Why might someone choose one over the other, especially since I can't see them without placing an order?