I used Chelsea gray from BM and love it
It is 3 years old and put on a beat up deck. I am in the process of cleaning my deck - I usually have someone do it but going to try it myself this year.

Hi Bleumax, what did you end up doing? And were you happy with the results? And if so, can you post a photo? I'm looking for similar advice. Exploring Behr Semi-Transparent all-in-one stain in a Slate color.

Behr is a poor choice for deck stain (well really anything but) and the all-in-ones from any company will not hold up or last as long as doing the job correctly.

I am searching for the same product. Bought a gallon of SW semi-transparent in Charwood but it's too brown. Need to tell my builder something tomorrow. A2gemini, any chance you could post a photo of your deck? Did you use semi-transparent? Anyone else have suggestions?

For our exteriors on cedar wood, we are going to use the Sansin SDF 1/2 Onyx. Its a little more black than it is charcol/dark gray/slate in color, but it's semi-transparent so let's the wood grain show through. We haven't applied the stain to the front of the cedar - so I don't have a picture of the end results. But we are staining the back/sides before putting the cedar on the house so I'll try to attach a picture of the cedar as is and the cedar with the Sansin stain. FTR, the exact stain specs: Sansin, SDF Base 0, 1/2 Onyx, SYO-5.75 SRO- 1.5, SLB-20. . We got it from Grey's Paints in Burlingame (SF area), they recommended the Sansin over other brands for exteriors.

@chock I'm on the peninsula as well and interested in using Sansin Onyx. Do you have a photo that you can share or is there a way for me to drive by to see? I'm in Bgame/San Mateo. Thanks!