As already mentioned by others: Seedsigner is the go-to wallet if you value security and transparency in the code. The lack of a dedicated secure element is seen as a feature, since the device is completely stateless and heavily based on the SeedQR standard to quickly import seeds, being them smple ones or part of a multi-sig setup. Then, the fact that it's air-gapped adds extra security, something that I never liked about Trezor and Ledger, for example.

Another big plus: it's extremely funny to build a Seedsigner from scratch, and it's a very nice educational activity that you can do together with friends. Great for orangepilling ;)