I like the idea of the Cx-9 being more of a wagon than an SUV, so to me the Ceikas ride better. I actually had a recent issue where my tires lost grip on a 90deg turn and i basically guillotined the underside of my car on a curb... (2 wheels broke, one ceika BBK caliper was ripped apart, both front coils bent) and the body shop was so annoying cause they didn't inspect the car properly, so I ordered 1 coilover and not 2, and this was over a month into repairs... so I had the OEM struts at home and told them to put those on cause I was tired of waiting. I hated the OEM ones, and as soon as the second coilover arrived, I wasted no time putting them on. The OEMs feel like truck suspension. My pops actually just bought a Cx-50, and I can say they feel similar as I drove that for a few days while visiting.
The ceikas are pretty stiff due to whoever makes their springs. I chose comfort config from their site and told them I wanted to lower my car by whatever corksport said they lowered the car by with their lowering springs. They asked me what range I wanted on the lift/lower, I said OEM to whatever Corksport said they lowered the car by on their lowering springs. They told me I needed assist springs in the back, but I ended up just putting the assist spring directly into the barrel spring provided without the lil spacer that lets you adjust the height. When I used all 3 components the car sat way too high. I think the shocks provided are pretty good.
However, I thought their front coils were transmitting too much jolt when I hit a bump, but the car handled well. They said their spring rates were 8k/10k front/rear. I think their springs are actually stiffer, so they feel like a 9k/11k. This time around since I had the coilovers already off the car, I changed the front spring on the coilovers to 9k swift springs with swift assist springs. Swift springs feel 1k less, and I think I hit the sweet spot. I love the way the car feels now. The only change I would make is getting 11k swift barrel springs for the rear, but that doesn't seem possible. I actually have the corksport springs on hand and was thinking about trying to fit them in, but my rides so good right now, that I have no motivation. the 11k swift spring rear would be like a minor upgrade.