I've been a CRKT fanboy since I graduated from Mtech knives.
But I have to admit, their quality control from the heat treater is hit-and-miss.
Columbia River's strength is that they are willing to collaborate with top-tier makers, which also saves them a ton on in-house R&D. Lightfoot, Elishewitz, Williams, Terzoula, are only some of the names they've licensed designs from.
I've had mostly good luck with CRKT, and continue to recommend them to people who are ready to take the next step up from $20 knives, but I would never pay MSRP for one, partly because of the steel, partly because sometimes, they just will not get sharper than about about 220 grit.
Kershaw does a better job with the heat treat, but fit and finish is about the same between the two companies. I would say the difference comes down to a matter of business philosophy, rather than actual product offerings: CRKT targets the general knife-using public, and Kershaw makes an effort to listen to knife knuts. Fortunately, there's a place for both.