I tried Va Va Violet for free from Crowdtap in exchange for my honest opinion, and I wasn't impressed. It seems that with many ultra dark colors across brands, patchiness is an issue, so if you are using that shade, a lip liner would be helpful to cut down on the patchiness.
My personal favorite is the vampy Black Cherry! It goes on a nice, sheer maroon in one coat, but two will give you the vampy, bad-ass look that a lot of celebrities are rocking these days with the darker tones. I find it goes well with every skin tone!