In honesty this is an unbiased comment, this is my first board with the channel (out of many), and first burton as well.
Years and years ago there were baseless bindings, no pad, just foot on the board. I hated it, felt terrible, the only cool thing about them was being able to feel a rail or box under your foot.
With the new ICS I was a little skeptical about the 2 screws instead of 4, in fact many people I talk to ask me about it. Obviously a company wouldn't be putting out a board and bindings combination that would tear apart. Not once has it come loose, hand tightened, I check them before every time I ride and never had to re-tighten either. In terms of board feel, I tried non EST bindings on it for a few runs and then put my Triad ESTs on there, there is a difference in board feel, it isn't just a gimmick. I can't really explain how it feels, just that I have more control. To me personally, I feel as if I can butter better with EST's than without on the same board, but as said above this is the bindings not the board. I ride a park board so I cannot comment on how a stiff board feels with it, but I'm very happy with it.
Another part of it is the markings on the board, super easy to get you're stance perfect, in terms of width and setback or centered.
Now with that comes the bindings, have used both the Cartels and the Triads (sold the Cartels, currently riding Triads). The pad underfoot is wonderful, soft but doesn't tear apart from standing on it or strapping in. Alot of people don't realize there are 3 "bubbles" on the footbed.
The large one is for stance width and center or not, the markings on the board show where you're at, and you just look through the bubble and line it up.
The 2nd is a spot for centering your bindings heel to toe (will post photo)
The third is your angle, loosen 2 screws and eye up the angle and you're done. I've never used regular triads, but the EST's are VERY light.
I'm no burton whore, as said before this is my first burton set-up in 16 years of riding, but they seriously are an excellent set-up.
Photo of the bubbles, hard to shoot in my basement due to flash but you get the idea. Don't mind the rust, didn't wipe it down and it sat for a week.