Honestly, the only reason I had Stylish installed was because multiple people on HN recommended it. So you'll excuse me if I don't "immediately" switch to the next random recommendation, especially if it comes with the reason that others in this thread are recommending it too!

BTW your characterisation of Ghostery's relation to an "ad company" is incorrect. It's an odd enough situation that I'm not using it any longer but they didn't get "bought by an ad company". Unless something new happened to them, in which case, please provide a link.