I have been riding for almost a year now and enjoy it more than I thought I would. I am considering upgrading from my $1100 specialized allez to something nicer even though I know the bike is more than adequate for my ability level. I have a few questions about titanium and would appreciate any input you guys may have.

People that have ti bike rave about how much better the ride is. Can someone quantify this a little more.
Are they more responsive? do they soak up road vibration better? What exactly makes ti better than al other than weight?

I have looked at Litespeed which has tons of options and different shaped tubes etc and Moots which seems to be closer to the custom side with the nice welds etc but less options. Has anyone owned both and do you have any opinions on them? Any other ti manufacturers out there that I should look at.

Basically I'm looking to get a smooth comfortable ride that will encourage me to spend more time on the bike, but also for the amount of money I want something with a little soul.