The following pots are all for shohin size bonsai which means they can rest on your hand.
This pot is unglazed and it has reddish brown specks. I would love to see a crabapple in this pot. The white flowers with reddish centers would look great in it.
If you ask people they will probably tell you a great many number of rules about choosing the right pot. If you are confident you can choose whatever pot you want for your trees. You won't care what people think. However, if you want some tips I have them. Use artistic principles, color, line, movement, etc. do you want to emphasise your trees flowers, fruit, leaves? Use a pot that has a complimentary color. You might have orange fruit, use a blue pot. You may have a tall tree, use a shallow pot to emphasize the tall tree. The one rule that i personally believe i must follow is that some cascading bonsai need tall pots.
In the end it all comes down to what you like. After all you are growing bonsai for your own personal joy and satisfaction.
What type of tree would you put in this pot?
I hope that you enjoyed these pictures, cheers.