You can use any and all RBAs on the MVP. I don't know who started the
sorely mistaken fallacy that RBAs=Mech. Personally, I always had really good luck with the
kayfun Lite. Nowadays, there are tons of clones of this atomizer that make it more affordable. It is not much more complicated than a dripper.
A dripper is the simplest place to start, but some people don't care for them. An igo is a good place to start, but again there are many inexpensive clones out there as well.
As far as the RSST goes, it is the best beginner genesis atomizer. However, building it with an SS mesh wick is by no means easy. It is definitely more difficult than other stuff.