dudesf, the clip on Flash series is plenty strong to hold tight under most conditions except when it gets caught on something solid (like doors

), something has to give so it will be the clip. I've read about other clips on other brands also bending under these conditions.
No assisted opening on the Auto clip, manual only, but it is truly a Zytel handled work horse. The arc lock is smooth as silk to open and close. It keeps constant tension on the blade while open, but as soon as you pull back on the spring loaded release button, the blade can be closed. Either by using your finger to push blade back in, or by first releasing pressure, then "flipping" blade in reverse motion to close.
I use this method to close the blades on all of my arc lock models. To open, I simply use my thumb to "flip" the thumb stud and it pops out very quickly. All one hand operation in a second, very slick and smooth. Once you get the hang of it, you can do this without ever getting your fingers in between the blade and the handles.
The Flash models have a bolt type lock, kind of a slide bar under spring tension that you must pull back on to release. After you pull the bar back, you must then push the blade in under constant pressure since it is spring loaded (assist). It too is very easy to do, but can not be done as fast as the arc lock. The Flash series are a blast to open and play with, once you get a few miles on them, they become very fast and smooth.
The PE model is an awsome looking knife but larger, it is an arc lock and has a powder coated blade. It is light and strong (Zytel handles), but is not anything like the other models mentioned above in my opinion. If you want a big, sharp pointy knife

then this is the one. I don't own one so really can't speak of how it performs as far as cutting task. But I am sure it would do everything you needed and more. The X-ray is exactly like the Mini X I have, except just larger. ATS-34 steel on x-ray models makes these a premium blade for most anything.
The Flash IIs are fun and rugged. The Auto clips are real hard working dependable knives. The X-ray series are the elite series with an awsome bite and easy to operate. And the PE is

, well lets just say it will get the job done........IMO
Hope this helps,
Robbie Roberson
