the pitbull mini might be more secure than the evo mini, but i used to have one and it started jamming like crazy after a few days in the rain. i cleaned and lubricated the lock as nicely as possible to no avail. when i would try to unlock it, i just felt metal grinding against metal and stalling mid turn of the key. for the last 6 months or so i've had the evo mini and the locking mechanism is just a lot smoother and it's easy to lock up to awkward places because it has the single bolt hinge thing (although it's the reason why the pitbull is safer; doesn't apply to my 1-5 minute lockups though).