In my few years that I was a reposessor, the only lock I wasn't able to pick was a war-lok.
http://war-lok.com/
With any decent level of precision dexterity, picking almost any other lock can be learned in a matter of hours and mastered in a week. Yes it's true that you only need a paperclip and the clip off an old pen cap. In fact, that's what I trained with.
A safe with a ten number padlock (1-0) while nice in concept can present problems. On some models when you punch in the wrong number three times it will lock you out for 24 hours giving the thieves no choice but to start prying and cutting. However, if this happens to you the morning that you are catching a flight for a hunting trip in Alaska.....you get the point.
With a fingerprint biometric safe the keys are all over the house. Anyone with some makeshift fingerprinting powder and some plastic wrap or non-powdered glove can lift a print from anywhere in your house and access your firearm quickly.
Cracking a safe with a dial combination lock is a much more difficult task and can, no, will take hours for anyone exept the most highly trained and practiced individuals. A dial lock safe is rarely accessed quickly by thieves, is not effected by power failures, won't lock you out for 24 hours, and doesn't require you to wear gloves in your home 24/7 to keep your prints off your countertops.
Just my $.02, but I'll give it for free today. Merry Christmas.