Good mouthpiece

[Yodachihuahua]

http://www.dwerden.com/Mouthpieces/tuba.cfm" target="_blank
Here's a good online tuba mouthpiece size chart (albeit somewhat outdated) but it does give specs. so you can compare mouthpieces of different brands in the size(s) you prefer (when you establish that)
One thing that I have always noticed about Bach tuba mouthpieces is that the throat sizes (bore) are considerably larger than most other brands (in a given size range) especially the "Megatone" series, which usually are approx. 9mm.

Thanks! This is the type of information I was looking for.

[BopEuph]

One thing I did, and you might try, is to visit the classified forum on this site.

When I decided to make the switch from euphonium to tuba, I spent about $100 on a handful of used mouthpieces. One of which is the one I now play on, which is the Perantucci PT-48S. I think I paid $40 for it, and it works great for me.

[iiipopes]

What is your budget? If it is $100 or less, then a copy of a Helleberg or a used mouthpiece might be in order. If $100 to $200, the universe expands geometrically and you can get lost in the forest. I'd try a Helleberg or something similar with @ 1.30 cup diameter and moderately deep cup. That will be different enough from a Bach 22 that you will know it is completely different, but you can turn around and sell it if you find something later that you like better.

[Yodachihuahua]

I have purchased a Yamaha Jim Self mouthpiece, and I already like it much better. It is a much better mouthpiece for me. Thanks for your helpful comments!

[Billy M.]

Congratulations on your purchase. Now go practice!