It's my third year on VPS Price Tracker [1], to my knowledge the largest database of VPSs with current prices and accurate specifications. It has a search form with 25 facets. Its usage has grown steadly each month since its launch, currently has 100-150 sessions per day.
Very cool. As a confirmed cheapskate, the first thing I did was check the cheap ones; but I noticed there was no information about the reliability of the providers - how long they were in business, how likely they'd ghost in two months, etc. Not sure if that information is even available or easy to obtain, but having made similar price comparison sites, thought the feedback on what I looked for first might be useful.
[1] https://vpspricetracker.com