While your waiting for your never to be regretted purchase to arrive, study up on how voltage and resistance relate to optimum vaping. It's definitely possible to make the ProVari do bad things and make for a bad vaping experience.
Tank-wise, I got the Vision Vivi Nova a couple weeks ago and can't speak highly enough about it. No polyfil to mute the flavour of my juices and vapour production is incredible. It also looks great on the ProVari and you can get metal tubes for it if the plastic one turns you off. If you go this route, get version 2 unless you don't mind doing a little fiddling with things to make them work the best.
Also if you go this route, good settings to start with and tune to your liking:
2.4 ohm head - 3.7-3.8 volts works well for me
2.8 ohm head - 4.1-4.2 volts works well for me
There's a VERY brief break-in period before you start getting the optimal flavour and vapour, maybe +/-10 puffs, but it's better than any regular carto I've tried out of the box. Filling is a breeze and the heads are easily replaceable.
Whatever you decide on, congrats on your ProVari! If you regret this purchase, you're doing something wrong.
Oh, and +1 to what Dana A said about saving for your next one.