Now, if I were to buy another hardware wallet, I think several points are important to me. Firstly, open-source nature, as security cannot be guaranteed without supervision. Secondly, the wallet must have been tested over several years and have a good reputation, preferably from a well-known brand. And finally, cheap is also important.
Considering the above points, if I want try Safepal X1, it must be at least 3-5 years later.
I have no idea if the X1 model is open-source or not. I can see that WalletScrutiny has not yet reviewed it, but their other product, the S1, never became open-source although they said it would. So the first condition you mentioned may never be fulfilled and you will have to look elsewhere.