I don't "flick" any knives but I open slow or fast depending on circumstances.
I recall when Spyderco came on the scene and it was "THE" tactical knife. I eventually left them for being too "low tech" (at least in my mind). I figured stronger (LOOKING) brands (and coincidentally more EXPENSIVE) brands were better for me as a police officer/tactics guy/knife nut. <insert arrogant smirk>
I later toured the world, going from assisted opening knives to a cheap automatic or two, then back "down" a notch to manual knives but VERY expensive production "tactical" knives.
I have ended up back with Spyderco! I decided several things that lead me back:
1. The low overall weight-to-blade length ratio (in my Enduras and Delicas) are the perfect balance for me of "weight-to-overall-"strength" of the knife
2. Spydercos offer a very high level of overall quality as well as QUALITY CONTROL right out of the box for the price. I have bought at least a DOZEN Spydercos in the last 12 months and NONE had ANY ISSUES. That is the way is SHOULD be-but is NOT sadly. I haven't been especially silent about the last brand of expensive knife I carried-of the three I bought in about 3 months or less-TWO of them had loose or stripped screws in the grip. Even worse than that was the rapid fanboy attack (on another board) that followed me posting a rant about this level of QC from a maker of $200 knives. I am shocked and amused that they are so brainwashed that they LITERALLY suggested that I should have been willing to accept that from that maker and "some lemons get through...blahblahblah." They suggested that since the Customer Service for that maker was allegedly "so good" I would then get to see "how well" they take care of the customer (!) They admonished me for DARING to post a negative thing about the maker but I laugh as they post thread after saliva-dripping thread about how great the company/CS/etc. is because they were really nice when they ordered a pocket clip or screws or some trivial item, or how they were "really cool" when they talked to them at a trade show, etc. Spydercos are like Glocks at least in my mind-they are RUMORED to have great Customer Service...I've just never needed it. Of all the Glocks I've owned or been issued (except a used one that was gun-plumbed and we fixed it) and all the Spydercos I've owned, I just open the box and use it...and use it, and use it, and use it.
3. I'm likely to get some argument here, but I am a FIRM believer in training around GROSS motor skills as opposed to FINE motor skills. (For me, based on my own experience as well as my observations as a firearms trainer for the past 12 years, it is settled science-it's not even something I need to debate.) For instance the classic example of GMS training is forcing officers/shooters to use the entire palm to grasp and release the slide of the handgun and NOT allowing (or teaching for God's sake) to use the little slide stop lever to release the slide during reloads. I see some debate on this but I KNOW it's faster and more certain for ME, and I've seen officers under fire in Simunitions training totally freeze and stare at the side of the handgun with eyes the size of quarters (again, UNDER FIRE) while wagling their thumbs trying to find or hit the little slide lock's surface area. Now I STILL think that almost ANY folding knife deployment is a FINE motor skill, but I humbly think that the large Spyderhole method is LESS fine than catching the 3/16" or 1/4" thumbstud of some knives, or the 3/16" inch overhang of a thumbdisk on other knives.