I bought a packet of it a week or two ago since it was on sale for a pretty low price (about half of what I typically see 34/70 sold for, for example). I'd never even heard of it before, but I thought "it's a Fermentis yeast, so it's got to be good." But then I saw tons of people hating on it online, and I started wondering whether I'd need to really tailor the fermentation temperature, grain bill, and hops specifically for S-23 instead of just making whatever I want to make. When I have seen people say "Hey, it's a bit estery, but it's great," it has made me a bit less worried.