As far as the quality of the vape....night and day.
What's your budget like?
I started out with a AGA T2 got it for around 20 bucks, i think its a good one to start out with. That way if you don't get into them or like them you don't have a lot of cash in it
A multimeter will suffice.
But if you plan to use eGo class batts for your RBAs, think again. The batt is way too underpowered for stainless steel wicks, and you will end up barely boiling your juice instead of evaporating them, resulting in washbacks and gunky solids in your tank
I have an AGA-t plus and a Zenisis...so far the Zen wins ...but not by much..I just ordered the RSST to put on a new poldiac birthday mod...but yeah for the money you cant beat the AGAT...the only drawback to that devise is the wickhole is a bit far from the pos post and you will have to lean the wick over to it to eliminate the hot spot that may develop
when I first got mine I had a coil built for it in about 3 minutes 5/4 wrap at 2.0 ohms..slight hot lead at the top , pushed the coil over a bit and tightened the screw and Bam!!...perfect center to edge glow... piece of cake...just make sure you have a good VV/VW mod for me the Vamo is a perfect devise to learn rba's with because the controls are so easy...ohm check...volt down to 3.2..pulse it to get it going and harden the coil..get it glowing a bit...let off...up a volt...pulse it to get all the coils red...up a volt...pulse...add a drop of juice pulse it...fill your tank and you good to go...and if you get a hot spot its easier to work it out while the coils are red they are more pliable
and remember to volt down all the way when you first put power to a new coil...thats 99% of the cause for new coils popping.