Xenon Ultima Bulb

Whilst in Kwik Fit the other day I noticed they were selling the above bulb on the counter. Looking at the packet they are a H7/H4 type replacement which claim to offer 120% improvement over halogens.

I have changed my previous A3 bulbs for Philips Extreme Vision or something similar and wondered if anyone had any experience of these Xenon filled replacement bulbs they wanted to share.

I think standard A3 bulbs are poor, my VW Tiguan not brilliant but better than the A3 offering.