Nobody is going to pick the Medeco, or an Abloy, or a Mul-t-lock or a Schlage Primus "in the field". They've all been picked, on a bench, with many hours dedicated to the work.
If you're worried about someone sneaking in "silently", with no traces left behind, these lock cylinders will certainly suit your needs, but I'm sure someone can come up with another way in.
The Abloy is very drill resistant, but so is the Medeco. Both have hardened parts inside, and while I don't know enough about the internals of the other two mentioned, I can safely assume they have some drill resistance too.
At my home, I chose Medeco over Abloy, because Medeco is a key I can hand to the wife (or others, etc.), and it works in the way that everyone expects a key to work.
Insert key, turn to unlock.
I have a number of Abloy padlocks, and while I'm happy with them, the mechanism requires inserting the key, and then turning to align the mechanism, followed by turning further to unlock. This is simple enough, when the key is retracted straight out, but if someone wiggles the key out, you'll need to wiggle the key in, to get the plates aligned enough to allow the key all the way in, before you can unlock. It's fine, if you know how it works, but it isn't intuitive for someone whose never used one before.