Tillers are a personal preference. Use what you like.

I use the same type of stick you have. It will take some time for you to figure out how to best use it. I adjust mine constantly but that took over a year to figure that out.

After a while you can tell by the feel how to lock or unlock. If you get in a bad situation just rotate it in any direction until it locks or unlocks. If you get debris in it rotating it a couple of turns will usually clear it.

I have found the JJB and the similiar Marstom to be more reliable and much stiffer than the Arriba Carbon