I'm considering getting a Xiaomi 14 Ultra and I can get it pretty cheap with Chinese rom. I heard it's not that hard to flash it and put in a Swedish/global rom.
anyone with real experience?
or do I keep the china rom and live with it?
If it allows you to unlock the bootloader, flashing isn't really that difficult anymore. What really matters is how well the device in question is supported by the custom ROM and the community. If you can find one that's officially supported by lineageOS, for example, they have good documentation and guides to walk you through it. If the ROM is less popular, you might end up in Telegram channels asking for assistance.
The most important thing you can do is research what you're planning to flash. Check XDA, find Telegram, Matrix, or Discord channels (which I know is extremely annoying), look for other people that have attempted to do this and note what issues they seem to have had.
Yep. Honestly, Xiaomi is my go-to to recommend to people looking for a budget hackable device. But if you have $700 on hand then Pixel is a way more sensible choice
If you're only interested in flashing the European version of MIUI/HyperOS then yes, it's very much straightforward and I can see this device is supported.
If you however want to install a custom rom (LineageOS based) then it's bit more complicated.