LoadedpocketzGreat review. Pretty much spot on. I have the 8k and it's even harder to open (Wave is perfect though). You can get the larger discs, but they are more expensive than the knives themselves. The 8k however has a slightly better liner lock vs the frame locks on all the other knives. My little EDC 3k flicks opens with ease, it does have a late lock up though as seen in your review.
http://www.loadedpocketz.com/kershaw-emerson-cqc-7k-knife-review/