I am very curious to the current state of affairs in 2020 regarding this topic.
My 5 cents: Where I can only speak for moving away from Davinci Resolve to Mistika Boutique.
I left Davinci Resolve because there was not so much development going on the color side of the program.
Still the responsiveness and accessibility of Davinci Resolve is great, compared to Mistika where the learning curve I just a bit more steep.
But, if you have Mistika under control it is a beautiful piece of software with a great support team and a lot of progression on the colour-grading side of the software compared to Davinci Resolve.
The level of control over colour you have in Mistika is really out of this world. (compared to Davinci Resolve)
Primary - with a great control over the printer lights (contrast mode on 'printer light' are really nice for split toning)
Also adjusting the soft-clip with a knee-soft and rolloff creates good looking soft-hightlights.
Bands - The control in bands is really great for look creation, for instance the 'Black and Shadows' and 'Highlights and White' are separated.
Keep your black's black while putting a bit blue in the shadows. I cannot go back to Davinci Resolve without this level of control. (yes you can pull this off in Resolve wit a keyer to keep you black's intact but this feels a lot better). And on top of de Bands control you can adjust the ranges for the bands.
Fixed - A fast way to do Hue shifts/ Hue-Sat control/HueHue -Luma control. In combination with a 'Qualifier' a great way to put a skintone in the right tint, or making the greens just a bit more autumn like.
Curves - And yes, the same curve control there is in Resolve is also available in Mistika.
Only the feel of adjusting Hue's with 'Fixed' is way more intuitive.
Qualifier - For every layer you are gonna key you can choose what source you wil use, you can use the 'Base Grade', 'Direct Source' or any other layer you just graded on. In Resolve you can do this in different ways, but this is much faster. Also there is a curved control for adjusting the key. And you can connect the keyer to different passes from the 'Post Department', like Z-Dept, Normals etc..
This was just a small gasp of features I really prefer above Davinci Resolve.
Working in VR and S3D is also a blast and perfectly intergraded in the ColorGrade interface.
Still LUT management, Stabilising shot's and overall OFX support is much better in Davinci Resolve.
But with the speed SGO is working on Mistika this can change quite fast.
For me, Davinci Resolve feels like a dead end, with a big focus on hardware sales.
And with the release of the new Mistika Boutique 10, this feels like a new fresh start.
Last but not least you can use the Tangent Element panel plus 2 Bt panels and adjust the mapping manually if needed.
My Mistika Setup
For more pictures check www.postwest.nl. 🙃