My easiest build was a Siren V2, because it's a velocity style deck. The Ares ONE was an easy build TOO but like, it suffered from multiple problems an failures. Neither are the BEST for flavor and I'm not sure if that's due to the deck style or what. I mean I love my Siren V2s but really you gotta use a strong, simple juice. Honeysuckle, ice cubes and rice water are NOT gonna do it. Think more like a fairly well balanced and easy going sort of fruit, type deal.
I do not have an Ares II so I will reserve comment because I hated the Ares 1 SO MUCH I really am not getting one until the verdict is in.
There are some great MTL atomizers that suffer from the issue of having phillips head screws that can be a freaking PROBLEM. I don't know how airy you like to get but the Freesia vape by Damn Vape is like the easiest vape of all time, because it has those screws with a cross on the top (I am doing great with my terminology here heh) and that makes things a TON easier. I noticed they had a Diamond RTA and I have not vaped it but same setup for the deck and coil.
I suppose if you really know your screw types and measurements, you could replace all the Philips head screws with like better ones that are easier to grip.
Get a coilmaster tab, more for stability of base than anything else. I also leaked liberally all over mine until I learned how to wick which is just.... Well you'll figure it out.
IDK some of my favortre RTAs are harder for me to build but over time I just got used to it. Like, one fine day I spent 2 intermittent hours trying to get a coil installed on my vape. Good lighting and magnification glasses can be helpful too. I don't like the jewler's loupe because everything looks weird to me perspective wise. Etc.
If it is hard, check out the rayon thread, because I LOVE rayon anyway it plays to my strengths (overstuffing the coil) as it shrinks instead of expanding BUT it also lasts way longer between wicking jobs, so that is a plus for me, it made wicking easier.
It's fine to start with premade coils, if it all feels overwhelming and whatnot. It's just one less thing you have to do although if you ask me, making a coil is easier than installing it.
Just.. If you really want to, you will find a way. I have also figured out good day bad day stuff and I try not to RTA if I'm having a bad day. But the payoff is worth it..
Oh, Rayon thread:
Rayon Wick - Better Flow, Flavor, Longevity, and Nic Hit!! - Pt.2