I acquired an Ultegra 11 speed drive train on a newer bike and it's a pita. Needs some tweaking every other ride.

I acquired a Sora 9 speed drive train with a Sugino crank on a NOS bike and it's worked perfectly from day one without adjustments.

i'm sure there is so much greater value to be had in an full Ultegra drive train, but i guess I missed that memo. Oh... it looks nice...