My lovely daily driver.
Efficient and soft. BBS with low effort.

921-EH Baseplate
My experience was excellent, however, one should be careful when using an extra sharp blade like a Feather. While I do like the EH plate, and will continue to use and recommend it, my personal favorite is the brass open/closed one.

Amazing shave
The Yates EH plate is the smoothest high efficiency razor I have ever used. It is smoother than my Timeless OC .95, My timeless Slim base plate, my Timeless bronze OC razor, and my Stirling 316 Stainless Steel Razor. It is extremely well engineered and provides superior results on the first pass than any other razor I have owned. Strongly recommend this base plate if you desire the perfect harmony between aggression and comfort. The Yates EH plate is now my daily driver.

Unbelievable performance and efficiency
The title says it all: without a doubt, this is the most efficient razor I own without being too harsh for daily use. Unbelievable design.

Efficient, yet smooth!!!
I have coarse stubble and sensitive skin, which is why I usually go for "efficient" razors (e.g., Mühle R41 and the Blackland Blackbird), which can give me that "slick like a baby seal" shave in three passes. The trade-off is that these razors tend to have very high blade exposure and/or blade gap, which, if used carelessly, can give you plenty of nicks and cuts. The 921-EH seems to combine the best of both worlds, i.e., the smoothness of a medium aggression razor with the efficiency of a hyper-aggressive razor. I would highly recommend this to anyone who likes moderate amounts of blade feel with stellar amounts of efficiency.