I've used this stem since they came out. They are one of the best available. Big size and angle selection. Looks nice. Has a super computer mount available. Nothing not to like about this product.
I purchased this stem in 110mm length to replace a 120mm stem from a different brand because I was starting to have some soreness on my shoulders during rides that are longer than 2 hours. Subjectively, the EA90 seemed stiffer & lighter that the old stem (probably because of the shorter length), but the integrated Garmin computer mount (which attaches to the faceplate) made my handlebar sleeker/less cluttered.
Installed the 60mm +/-& degree version on a Kona Sutra (56cm). I choose not to use the custom Garmin 1/2 turn mount that can be integrated with the stem. I prefer the K-Edge XL Combo mount so that i can install my headlight directly under the Garmin. However, it appears that the integrated Garmin mount would work well.
Pretty standard for an aluminum stem. I will say the bonus is I can mount my computer directly from inside the stem plate putting it smack in the middle. Good for my aero build I just completed.