Pbusardo has a nice detailed video (2 parts... It's that long) on YouTube of the supreme. I watched it because a buddy of mine just broke his evic at the time and wanted to be able to chat with him on if the supreme was worth it or not. My opinion is it is very gimmicky... Plus the "heartbeat" of the battery is a huge turn off because it will drain more that way. Plus there are some design annoyances that mentioned in the video as well.
Some of the features were cool like the mode to start the coil hotter then to normal, but I believe that was on the evic as well. Menu system seems super annoying and long to navigate.
If you're all about unnecessary features/gimmicks, then you'll probably like the supreme. But if you just want it simple, "set it and forget it" you can find a different device that'll work for you.
Look for something that will perform how you want ie vv, vw. From there start looking at other good features like battery check and resistance check. Also consider the safety protections of a device. Are you going to have to tweak any of your builds for those protections ie current limits.
I settled for a ProVari mini based on it being vv, and being reliable and tough. Price tag is 180 starting on it (there are some add on options like led color that cost more). But I have two and I'm super happy. I also just got a vapor shark rDNA that I love and have been using non stop. Box mods may not be your thing but this guy is tiny and performs great, plus it's a DNA 30 so I can use this for all my attys with ease.
P.s. my buddy ended up buying a ProVari over the supreme.