Tons of people love Ernie's knives, and here are some reasons why.
They're built like tanks. Big, thick pivots, beefy G-10 scales (really, a better term might be slabs, or boulders

), thick blades with a strong chisel ground secondary bevel.
They're adjustable using
normal tools (flathead and philips screws, not those silly torx screws that strip so easily and require special drivers. Chances are, you already own all the tools you'll need to adjust your Emerson, especially if you own a SAK).
The ergonomics are superb. Once you hold an EKI knife in your hand, you'll be hard-pressed to find another whose handle is so well-suited to the contours of the hand.
The liner lock is well-engineered. As with any company, there is the occasional lemon. However, if this happens with an Emerson, you can fix it yourself! Should you not wish to do so, Ernie will make it right. Also, to ensure that the liner lock is as strong as it needs to be, the locking liner is now made thicker than the opposing liner. Some people might say "i don't want my fingers to get cut" or "I hate liner locks, especially Emersons," but I'd like to know how many of those people have
actually had an EKI knife fail and cause injury (especially if they were to make sure the lock was correctly operating beforehand).
The Wave feature is awesome. I don't use it every time I open mine, but sometimes I find it extremely convenient. And, should you need to access your knife quickly in an emergency/accident situation, you have it instantly available. Knives equipped with the Wave are pretty much
the ideal rescue knives.
The GRIND. Emersons have a chisel-ground secondary bevel. Some are fully chisel-ground, meaning one side of the blade is completely flat. Some have a standard V-grind all the way down to the secondary bevel, which is chisel-ground. I have a CQC-10 that is ground this way (modified V-grind). They handle slightly differently from a traditional V-grind, especially if you're trying to whittle a stick, but it's easy to get used to it. They're simple to sharpen since you've only got to worry about one side, and the edge is very durable. For utility purposes, they work just as well as any other grind.
I know this may sound biased, but I don't intend it to be. I like many knife companies, from modern tactical makers to traditional styles, and I enjoy them all because of their differences. This post is not meant to say that EKI knives are superior to any others, nor is it my intention to put anyone down. I only wanted to illuminate a little bit why some of us are die-hard Emerson fans.
Hope this helps.
Peace.
Alex.