Thanks, I just bought the Ultegra xtc 5500. I went to the tackle shop to try the Ultegra, Basia 25qd and iso6000.
They don’t have Basia 25qd, they said they haven’t had it for ages.
So I tried Ultegra and iso6000, iso6000 is definitely smoother, it is bigger, but it is lighter.
Ultegra is slow oscillating, I am impressed by its online laying ability, it’s a bit heavier, but it is smaller.
Anyway, eventually I choose the Shimano Ultegra.