All of my guitars but one Alvarez acoustic are all electric guitars. I generally always have some type of pedal board, so I'm a hard core KORG Pitchblack user, and have been for as long as I can remember.
I have a Snark something or other, and it works "OK"... but I have over a dozen guitars, and using a clip-on is a PITA to me, having to swap the thing to other guitars. Or... plug in to the same pedal board, and bah-duh-bing... it's just a matter of switching the phone plug for one guitar output jack to the next...
I had a KORG clip-on as my first clipper, and it was a piece of crap. No matter what I tried, the low E string would not register on the thing. I have used KORG tuners since the GT-6 back in the 70s. But in my experience their clip-ons suck donkey hooves... As is the case with just about every clip-on I've ever had. Not to mention its another thing to forget at home or leave bouncing around in your case.
When I gave guitar lessons years ago, I tried numerous different tuners to use during a lesson. The older type of tuner with a VU meter needle is about useless in that venue. You have to squint too much to see the needle. I next tried a Peterson StroboStomp pedal tuner... what a piece of crap... it said on the packaging and industry marketing hype "true bypass" but as soon as you turned it off it sucked tone really bad... NOT my idea of true bypass...
The main reason I like the KORG Pitchblack is the size of the letter readout. The LED letter is about an inch tall. Great for reading standing up next to your pedal board. No stooping or squinting or getting on your knees with a flashlight in a dark bar to tune your guitar.
When I did finally discover the Pitchblack, I velcro-ed it to the corner of the table next to my lesson chairs, every student and myself could use it and see the readout plain as day.