I just wanted to take a minute to say a good word about Iron Mountain Hosting.
I began using them about three weeks ago, and so far I have nothing but good things to say about them.
They have been outstanding in every way, and have assisted me with virtually anything I've asked them to help me with, including many things they didn't have to help me with…
Performance wise they've been very solid so far, but on customer service alone they've been the best hosting company I've used to date.
I'll give a more in depth review after a month or two, but so far so good and I am very, very pleased.
Thank you iMountain.
I'm using this hosting for about 2 month. Nothing bad i can't say about them.
Takes longer than either “3 Weeks”, or “2 Months” to truly determine the reliability of any host, please report back in 2-3 Years so that we will know if they are a viable source. 
What Struck said. Also did you mean iMountian Hosting? They were sued by Iron Mountain a couple of years ago for trademant infringement and had to change thier name.