You want the second one kind. The first one opens in seconds with a business card (see tutorials on youtube).
Also the second one is usable even if you cannot see the digits (as is the case without my glasses, especially early morning).
I would recommend heavy duty key safes, the one by Kidde (German Qualitat). Thief-proof, and rust-proof. Mine is rust-free even after 3 years. They are highly praised by locksmith sites. Only drawback is that they are quite small, you may have to store a dedicated key in them, cut to fit inside.
www.kidde.com/home-safety/en/us/products/key-security/residential-key-security/key-boxes/001166/I do not know the quality of the O&E one, but it is bigger than the Kidde, so it should be better for big keys.
I never locked my car before moving to a more known surf place with traveling surfers around that are known to grab what they can access easily (wetsuits, boards) when moving out. They know the key-under-the-car trick, but they wont risk breaking a window unless they can see very tempting things inside (my van has no windows). I kept my key on me in a wetsuit pocket at first but the key safe is more practical, and you can share the key with other people if you did not come alone in your car/van (family, friends...)