I had a Vario on one of my other bikes and loved it. Being able to 'tune' the position to what works best for my specific height/riding position is a great idea and worked well.
I would be hesitant to buy another, however as when one of the hinges mounting the screen was damaged in a very low speed drop, not only was I not able to source a replacement (the rest of the screen was fine), but Vario ignored multiple emails from me asking them if they sold replacements separately. If it had been £60, I'd have just bought a whole new screen, but that level of service on such a premium product is unacceptable to me (even though the product itself was great, if a little fragile).
I like my bike because I can overtake 4x4s down farm tracks with a week's worth of shopping on the back.