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I got the Model One recently on sale. It’s good enough and you can save some bucks with it. The chance of any physical attack on the device is far lower than you can imagine.
Unless you want to save Solana or other coins not supported on the Model One, you want the secure element chip (that offers just another barrier against physical attacks) and the ability to enter the passphrase you might use on the device itself, the model one is perfectly capable of storing your coins securely.
Other differences are the USB type C port of Safe 3 vs the microUSB of the Model One, the backup options (S3: Standard and Shamir Backups vs M1: Standard only) and the seedphrase generation (S3 generates 12word seedphrases and M1 24word seedphrases), although both support importing either 12 or 24 word seedphrases.
Save some bucks with the Model One, and probably you going to receive it sooner that the Safe 3