After using their services for a year, I am happy to say that they are amazing.

Been with them for 9 years now. Now plans on leaving. It’s really hard to find a host provider that has great customer service as well as great tech support. I’ve had nothing but awesome service since day 1. Keep doing what you do Knownhost.

I have been using R3esolution for several years now after having gone through one unreliable host after another. At first blush, R3esolution may seem more expensive than other hosts; however, their VPS options turn out to be ... Meer remarkably affordable when you consider that you have segregated resources so you aren't competing against hundreds or thousands of other websites for the same memory and CPU cycles.
For the server purist you can setup pretty much any Linux distro you like and configure it from the ground up. OR, if you prefer, you can take advantage of their Fully Managed solutions that include cPanel and pro-active monitoring so that, in the event that something does go down (which it almost never does), the Heroic Support Team has often fixed it before you even notice it.
Speaking of the Heroic Support team, they are amazing. I haven't needed to contact them often, but when I do, they are the most responsive support staff I've ever encountered at a hosting company. Whereas previous hosting companies would barely explain how to do more complex things, R3esolution's Heroic Support has not only explained the process to me, but actually done a lot of the work on my behalf.
I really couldn't be happier with R3esolution. Minder

Worst mistake of my life was signing up with these guys. One of my accounts was hacked and their abuse team sent me an email alerting me to the files that were malicious. I deleted all of them except one (which I missed by mi... Meer stake). Because of this, on a Friday night, they shut my site down - took it off line. Then they give me the spin that their 'abuse team' is different from their "support team" and they only work 9-5 monday to friday - no after hours support. So my site is now offline until Monday at the earliest. Dreadful service, in no way fit for a professional business to rely on. Please learn from my mistake, avoid these guys at all costs. Minder