I've only played ED with the Elite pad, and whilst it transforms every game, I think it's especially great for ED. The two tallest sticks add so much more control, especially if you adjust your own stick sensitivity in the app (toggling radial calculation on helps, too).
And with the paddles I particularly like being able to keep orienting the ship whilst toggling between flight mode. Free-looking and snapping back would be a hassle with a normal pad, but with a paddle it's practically a feather pull back and forth.
Digital Foundry did a recent
head to head with another pad, and they rated it highly.
Is it true the paddles themselves tend to come off easily?
Nope, I use all four and I've had maybe one or two start to detach when I've moved with one hand on the pad, and a paddle catches on something. They do easily detach, but they don't just drop off randomly.
However I've using 2 rear paddles (using the full 4 is awkward because I have fairly large hands and keep hitting the larger paddles by accident) as A and X. Means I don't have to move my thumb off the right stick in order to cycle targets or change firegroups
I have both sides repeat their use (see above), and whilst I might change the lower left function eventually, so far I've been fine with the other shift inputs.
It'd be nice if FD supported the pad with additional bindings, i.e. mapping FA to a paddle somehow, but I very much doubt such bespoke configs for the pad will be released.