Rayner pots are amazingly durable-- she puts out a lot of work with some very fine larger ovals. Lenz pots are great proportionally but alas he is done and they are getting less available. Lang pots are always strong with perfect shapes. Local potters can be commisioned but be emphatic on shape proportion and weatherproofness and strength characteristics
I second Crust on all of these. Rayner, Lang and Lenz (if you can find one) are the top tier of bonsai potters in the U.S. for me. Anything they make is quality and works visually, as well as horticulturally, with trees. They know proportions that work for bonsai (which is a critical point that the majority of potters just getting into making bonsai pots misunderstand, just don't get, or can't achieve technically). Ranyer and Lang can also make pots to go with specific trees.
I also consider Don Gould one of the best bonsai potters in the U.S. His work is still around, even though he isn't. I've got several of his early works including a big custom pot he made for me. (his later stuff was too "out there" to use with trees).
I tried to work with local potters to varying degrees of success. Some are just to "into themselves" to make a decent recognizable bonsai pot, some can't get past the "it's just a baking dish with holes in the bottom" approach, others get stuck on making pots that scream "look at me and how precious I am." Neither approach produces much of a bonsai container. Some local potters also tend to consider themselves "Arteests" with a capital "A" and think bending their work to fit into the bonsai pot format is beneath them.
That format of "plain and simple" seems simple, but it's not easy to pull off well. It is demanding in skill and design to make it work.
I don't buy pots for makers' seals or reputation. I buy what works visually and what works with trees. I also don't buy pots to go with trees. I buy pots that CAN go with A NUMBER OF TREES. I have been buying bonsai pots from Western potters for two decades, including from potters from Europe (don't get me started on those, as there are some awesome potters over there -- some who have become astronomically expensive in resale here in the U.S.)
I've posted this photo before, but I'm too lazy to take another. I have a pot problem ;-) That pile includes U.S., U.K., German, Japanese and Chinese pots. The second photo of the boxwood is a Don Gould drum. I've got more inside and around the yard too.
![bonsaipots.jpg bonsaipots.jpg](https://www.bonsainut.com/data/attachments/207/207937-a2ddbcc946801ce6f40e146e377fb2e4.jpg?hash=ot28yUaAHO)
![boxwood3.jpg boxwood3.jpg](https://www.bonsainut.com/data/attachments/207/207938-c4ac0631c0d108f16d2e54203232ab78.jpg?hash=xKwGMcDRCP)