I have been with Hostiso for more than 7 months and have loved their hosting and service. I have always had prompt, satisfactory answers and solutions. The system itself is rock solid and the software & features are excellent. Their servers are also faster than one would expect for shared hosting, much faster than some other hosts I've used. I am totally impressed with these guys.
I just hope they don't grow too large and lose the foundation that is making them so impressive.