Sometimes we can't get everything we want/need in a soil by relying on someone else to produce it. E.g., you can ask at the pet store for a dog that will fit in your lap but that you can use to pull your sled in the Iditarod, but it's likely you'll need to make some compromises somewhere.

To keep it simple, if you don't want to learn how to make your own soils or why it's a good idea ..... Fafard's makes two mixes that are fairly well-suited to trees in containers. Those mixes are their Nursery mix and their 51L mix. Both are based on pine bark as the primary fraction and much better suited to trees in containers than the peat-based mixes more commonly used because they are easy to find.

If you're bewildered about soils you have my attention, and it's likely I would be able to clear up any confusion, so if you have questions and wish to ask them, or need anything in particular explained ......

Al