Ask HN: Where do you look for reviews when buying software for your business?

Hey there,

I stumbled upon G2 crowd site which is a business software review platform, but I want to see more websites like this one before making up my mind and I couldn't find something until now.

Where do you go for reviews when you have to buy software that your business needs? Or how do you go about buying software business I think is the more big picture question.

Thanks!