I have 0450 as well and it was my daily carry until I got the mantra. I would say the mantra is best of the three, however, it has one thing going against it in my opinion and that's the flipper tab. The sage finger choil allows you to choke up, while the tab on the mantra does not allow this. That being said the mantra has a great blade to handle ratio and really disappeared in the pocket, you can actually still use the pocket it's sitting in unlike a pm3. The sage 5 is slightly thicker in the handle.