I got my Porvari Friday if I would have gotten one months ago I would have saved money on a lot of ego batterys
I don't consider my eGo batts a waste - they make for great backups and I still use them when I want to travel light and/or be less conspicuous. An eGo topped with an Evod is a nice, compact, simple but very effective vape. I never leave the house without at least one in my vape case as a backup device.
As to the OP - a brand new ProVari costs $160-$200, depending on color and LED options. Add the cost of batteries, a charger, etc. and you're looking at over $200 for a complete setup. Are they "better"? They're very well-made, durable, and have some differences in electronics which make for a more consistent vape - if you consider that "better", then the answer is yes. If "better" is defined as bang for the buck and/or effectiveness in helping you choose vaping over cigarettes, it would be hard to call them "better"....people have done very well and spent much less money for devices.
They're easy to use once you learn the menu system - and it's not a complicated menu. Basically you can adjust the voltage up or down, turn it on/off, check your battery voltage, check the resistance of an attached device and turn the LED in the fire button on/off. Not rocket science.
I own Twists/Spinners and I own a ProVari. I like them both for different reasons. The ProVari is my primary PV and goes with me almost everywhere, but I still use the Twists/Spinners as well - and they did a great job keeping me off cigarettes for nearly a month before I decided to buy the ProVari. I researched various PVs for two weeks, watched reviews, read and compared specs until my eyes were crossed and had my finger hovering over the "Check Out" button for three or four different devices before I decided on the ProVari. I don't attribute any magical properties to it, and I don't hear angels sing when I pick it up - but I don't regret my decision to buy it, either. It fit what I wanted exactly - your mileage may vary.
I'm not one of the fanboys who posts "Get a ProVari!" on every thread asking which PV to buy (in fact, I haven't posted it to
any thread). It's a great PV, but I don't believe it's the one-size-fits-all answer to every question.