Hi Ray,
I've been with they for about 6 months. I've only had a couple of hiccups during that time and there support was good. They respond quickly to trouble tickets. I made a suggestion and it was implemented shortly after. So for the price I think there great. They also know DNN. So I would advise hosting with them. I have 4 site at present. Here's a link to the main site I host with them.
http://www.dogclubofhollywood.com The speed is great. Neven a slow time regaurdless of time of day. They also keep there systems up to date.
I haven't had any problems that would cause me to even think of moving. In fact I'm getting read to raise the plan I'm on.
Well there might be one problem. There spam filter if anything is set too tight. The problem is you need to wait to get an email during the night listing what it captured before being able to release the message. I know there working on a way to be able to check in real time what's caught but it's now ready and no date has been given.
Ron