AWS has been good for us. Since at least when we started spending about $100k/yr we've had a dedicated account rep we can contact at any time. They also get in

AWS has been good for us. Since at least when we started spending about $100k/yr we've had a dedicated account rep we can contact at any time. They also get in touch to schedule a check-in every few months. They've been genuinely helpful in several situations and have scheduled meetings with various teams around AWS (like, actual engineers) to get us answers to questions, support, and guidance. We've been put in touch with team leads and engineers working on beta features when we tried to use them and had issues to report. Obviously this is all a sales tactic: if we have questions about X, putting us in touch with experts in X makes it more likely we'll successfully implement it and then pay them to use it. But it's the kind of sales we're getting value from, not just blindly pushing us to pay them more money. We don't pay for any support package or anything.