There are many thread about Euro plum here. I’d say searching for info from this forum, you will get more reliable and first-handed experience info.
On the top of a page, you will see a looking glass symbol. That is our search function. Click on the looking glass, then, type in a key word like Euro plums, many threads will show up.
For example, I typed in Favorite Euro plums, this thread (and several others showed up). Check this link out.
My Euro plums are on Marianna 2624. I like them because they are medium-sized trees, all pruned to open center.