In addition to no H2S, the Avante eats 25-30% of the malic acid. I used both in last fall's Chambourcin, and the batches were distinctly different. I'll use both n separate batches for my CA grapes, but the Chambourcin will be all Avante (also called Adante on their site).
I'm also interested in Brio and Maestoso, but I can only make so much wine so those are for future years, unless I can find a reasonably priced package in bricks less than 500 g.
I have a Metheglin/Cyser in production now, a Metheglin (mead with cinnamon, cloves, nutmeg, allspice) that I backsweetened with undiluted apple juice concentrate. My next one will use apple juice instead of water to dilute the honey but will otherwise be the same. I'm thinking of using their cider yeast Fresco.
From time-to-time I will use strains such as RC-212, which does produce H2S when stressed, but I will also bump the nutrient up by 50% when I do so.