Linode hasn't killed my servers, but just informed me that they'll be doing maintenance on my production box that will likely be a two-hour window, but could take up to 8 (!)
This is true, Linode's support is top notch responsive. I've been with them for several years, no issues, great uptime, they keep bumping up what they offer without touching the price. There's no per hour gotchas. What they say they offer, they deliver.
Not very excited about Linode these days.