Just so you know I have a very high learning curve and can pick up almost anything with no problems, so having a super hard to navigate menu like the evic isn't too much of a problem for me.
I actually think navigation is way easier with the evic than in mods with 1-button controls. People think the menu is complicated just because there are a lot of options, but navigation is a breeze and the screen makes it easy to understand what you're doing. I've only used the 1.2 firmware, but I think a lot of the impressions people have about it is from earlier versions. I got the evic after reading about the 1.2 update. There are definitely some faults in the evic, though, and it won't hold up to the same abuse some other mods can surely take.
Also, like someone else said, carto tanks aren't really much more complicated than anything else. And I have fewer issues with them than anything else. I use tanks made for standard size cartos rather than xls like the dct tanks take. For me, the standard sized cartos (35mm boges) perform better than xl cartos, and I think the standard sized tanks look better on all the PVs I own.