I`ll just get to it. I`ve been using ClutchMasters products for 20ish years. Multiple platforms of vehicles, so when I built the engine in my mazdaspeed 3 it was an easy call to make. I first went with the FX400 because I knew I`d be making enough torque to be of concern with anything less than a stout clutch. It`s a ceramic button style disc with plenty of gripping power and mildly increased pedal effort. The downside is the ceramic disc. On a performance level it left nothing on the table. Held up to every run, every pull, every hard effort I put it through....what it didn`t handle was the daily stop and go Dallas traffic. I drive 30K+ miles a year. It gave me 32K before it tapped out. Out of a ceramic disc on a daily driver that`s not bad. I replaced it with the FX350. It`s a carbon fiber composite disc that uses the same pressure plate the 400 does. It is easily as grabby as the 400 ever was and will offer up triple the lifespan. It hit right off the floor and is instantly engaged, no having to sneak up on it. In fact, even with 28 years of driving a manual transmission I did stall the damn thing several times just getting to the end of my street the day I got the clutch in! It`s better now that I have grown used to it. The 350 may not react the same to a 7Krpm FFS that the ceramic 400 would, but I promise you it`ll take it. I don`t drag race and the track doesn`t call for that level of aggressiveness anyway. On top of all of the DFW area driving I do locally, I take regular road trips with my son, so reliability is a huge factor. Our big trip this year will be roughly 4,000 miles round trip. I HAD to feel comfortable with my hardware. I`m not concerned at all about the clutch, a confidence I am very glad to hold. I know there are preferred brands, and one or two people have expressed odd experiences with CM products. I have never had one fail unexpectedly or prematurely. They are made right in the USA, often built on site the day they are ordered. I loved the 400, I so far love the 350. I`m also using their braided clutch line and couldn`t be happier.