Hi, another typhoon is coming to my city

Now I am using 62H for bass.

But most of my performance does not require 2nd valve in a symphonic band.

So I am considering a single F valve bass.

The tuning slide in the hand slide model

like 60H(Dillon has one at $1995), R8ST and Kanstul1670

is better for me to switch back to 62H.

Let me know if you have any impression of them.

hurry