I have just been in contact with Samsung support. I was told that the last letter stands for the country of destination in order to adjust the offers and configurations in the OS. XXH is the version designed for Hungary. XXE is probably for Europe - in any case, I was advised to buy the XXE in Switzerland, i.e. the cheaper one from digitec. Maybe digitec simply bought more Hungarian freestyle devices when there was a shortage and now has to get rid of them...?
On the one for CHF 720.00, the manufacturer's number is SP-LSP3BLAXXE. For the model here it is SP-LSP3BLAXXH.
I have not found any difference in the features. Possibly different manufacturing batches and with the current chip problem in the small parts, different suppliers or something. In terms of performance, it can do the same, according to the specifications.