Last December I took part in a survey about UX-Tools. The results are in. One key finding: Sketch is dominating the pack – not only for software 😉 Find the results here: Design Tools Survey By the way, the site uxtools.co is a really comprehensive and up-to-date resource for UX-Tools.
Unfortunately, testing often degenerates into a trial. New designs are somehow thrown into a variant test. The testers hope to win the jackpot. It’s like digging gold somewhere along some river. This is very time-consuming and not really profitable in the long run – unless you are very lucky.