Hi guys!

The Provari looks amazing. But they seem very expensive. Altogether it adds up to well over $200. (I live in Ireland, the Provari and all the bits and bobs is even more expensive over here.)
I'm brand new to vaping. This is only my 3rd day off cigarettes and my 3rd day vaping. I'm using an eGo K with Kanger MT3. I haven't yet found an e-liquid that I like (hopfully the postman will bring something nice in the morning!!!) But I am enjoying vaping and after being a smoker for 26 years I am not craving cigarettes. This is solely thanks to my e-cig!
But I imagine the time will come when I want to try something bigger and better! But e-cigs like the Provari are madly expensive, are they worth it?
Why are they better?
What difference does higher and lower voltage make when vaping an e-cig? I don't understand the voltage thing at all.....
Is there much of a noticeable difference between smoking an eGo K to a Provari? (I'm guessing there must be a huge difference!)
Is the Provari difficult to use? Are all the different settings complicated?
Sorry for all the questions, I'm just really curious! E-cigs like the Provari look amazing. If they really are good I'd love to eventually buy one with the money I've saved by giving up the dreaded cigarettes!