As far as biometric handgun safes go, Liberty handgun safes are by far the best, they are by far the most reliable. Personally I would get this one:
Liberty Bio
But in general, Biometrics are the least effective when it comes to handgun safes as you never know exactly what your finger will be like, ex. sweaty, dirty, oily, lotion, etc. If it doesn't work when you need it, what's the point right.
Personally I prefer Simplex lock mechanical handgun safes, they have no batteries, no electronics, nothing that can fail, just a simple, old school mechanical lock. Personally, I bought the Stealth heavy duty handgun safe but they also came out with a cheaper model that looks pretty good to.
Heavy Duty:
Stealth Heavy Duty
Cheaper version:
Light Duty
Let me know if you have more questions,
Matt