There was just a paper on how instant coffee is bad for you. Since it is a little hard to figure out, note that the paper considered 3 groups: filtered coffee, instant coffee, and the general group of any coffee where people weren't reporting which of the type they drank.
Not sure if this community wants a cross post, so see: https://lemmy.ml/post/1675001
This is my first time going instant! I'll say that it has a distinctly 'instant' flavor, but it's not altogether bad once you accept it for what it is. I went with verve because of a Wirecutter article that had it highly ranked. The other option I considered is an instant coffee from cometeer you have to keep frozen for up to 3 days before use. It seemed too fussy for me initially, but I think I'll give it a try next time.