For me, Cap VC v1 is a favored staple.
As mentioned, it’s rich and creamy, but has no off notes IMO. A very “American Custard”.
I prefer it as a SF at 6%, and have used it most frequently between 2-4%.
The Vanilla aspect becomes more prominent as the percentage increases, but retains (or adds) a nice “thickening mouth-feel” at 2%, with only a touch of vanilla peeking through.
My typical power has been 34w to 50w for this flavor. No ill effects from lower power up to 50w. (a wide range flavor wrt power)
I use it on a Theorem RDTA though, which is a pure ‘flavor machine’ when used with an unrestricted friction-fit drip tip. (Read as: the ID of the drip tip does not narrow, and as a result, a wider bore is allowed due to no longer needing additional surface area required by the use of o-rings.) The factory tip that comes with the Theorem is absolute trash, and chokes both flavor and clouds IMO.