I have been playing chromatic harmonica for a number of years. Only play a modest number of melodies (e.g Danny Boy, Yesterday.) I am a tongue blocker, only because I could never get the hang of puckering. I use Tabs and have to be familiar with the tune to learn to play it. Once learned I play without the Tabs. I grew up believing I was tone deaf and only realized that I was not, when I recognized I could tell when someone’s singing was off key. So, I am thrilled to be able to play the chromatic harmonica. My current main axe is a Seydel NONSLIDER Orchestra tuned (Key of C) 12 hole . Unlike the regular C NONSLIDER, which has no valves, it has a couple valves on the very lowest holes (have not had any issues with them).
I started with a diatonic, but had difficulty bending notes, so switched to chromatic.