I've been with Nerdio/AdarIT for many years, and they've been an outstanding partner to our "small business" environment. They are responsive when needed, and informative to our many questions as the world of technology evolves. They have helped us navigate some tricky challenges, and I appreciate that they kept us apprised as solutions were sought. I would highly recommend them.
There's not much to dislike. They've grown quite a bit the past few years, and their responsiveness is not always as quick as it once was, but they've always responded w/in a reasonable timeframe.
They host our exchange and file server, and it's been wonderful to always have access to our files and to them, no matter where we are or really what time it is!