I think better depends on your setup. If you're using multisig, which you should, then better is easily a Seedsigner due to cost and open nature of the project but I'd still count a number of devices like Blockstream's Jade still higher. If you're not and using the device as a single signature device while trying to keep the key on device then I'd prefer a Passport. While most of the same security assumptions of Coldcard also apply to Passport, nostr:nprofile1qqsg8k9myvegcelvu2klzvrdh9lr7qnms57chkhjymgpcts09n4dutspzemhxue69uhkummnw3ezumtfd3hh2tnvdakz7qghwaehxw309aux6u3ww4ek2mn0wd68ytn0wfnj7qgmwaehxw309aex2mrp0yhx7unpdenk2urfd3kzuer9wchs3ct77k's dedication to open source and not just source verifiable firmware and the quality of the device's hardware make it an easy pick for a better device.