I have the Ribble Endurance Ti, very happy. Rode a Litespeed Classic back in the 90s. I do have friends with premium ti frames, the welds on the Ribble aren’t quite as nice, but given that the frameset likely works out at half the cost or less (considerably less in the case of the friend with a Passoni!) it’s still a very nice looking frame. I like the fact that it combines the classic look of titanium with modern frame features - disc brakes, internal cabling, dropped seat stays, clearance for 32mm tires, and a fairly long and low geometry that’s similar to my race bike.
In terms of how it rides I couldn’t be happier. Smooths out a lot of the chatter from UK roads, but still handles well and plenty fast enough though I’m not planning on using it for racing. I think this will be the bike I end up doing the majority of my riding on, all year round, for quite a number of years.