First trials unicycle?

Hello I’m fairly new to the forum.

I’ve been riding a nimbus 29 muni for about a year now and before that I had a 24 muni.
I would like to learn some of the technical stuff and maybe some tricks so the question I ask is … What trials/street unicycle am I best to start off with? Is a 20" the best size to practice these on?
Also I’m 6 foot 4 so am I best with a longneck frame?
Many thanks

It depends on how much you are willing to spend but a 19" wheel is what you want. The first unicycle I would recommend is the nimbus signature trials which is about $350, most things cheaper won’t hold up. Just look on unicycle dot com and see what you like and feel free to ask more questions here.