Ive noticed that personally Humble Bundle itself has gone down a little over the past few years. They used to do really good "Pay What you want" bundles. But I find most of them now are full of games not many people would want, I haven't bought anything from Humble Bundle in a good few years cause of this. And their store sales are never really that good compared to Steam sales a lot of the time.
I find the store excellent, though mainly because of the 20% discount for Choice subscribers. I use it more than any other store I think.