Will I be happy with happy-hosting.com?

No, happy hosting is for happy peoples not for business peoples, for business use the best hosting provider like hostgator.

Not sure about them, but I strongly believe that you will be impressed dealing with m6.net web host.
Their email support is so fast, so good, that you have the solution or the first step to the solution in less time than you would spend in a call support queue. Easy set-up in control panel as well, and an excellent price.

Would rather recommend dealing with exmasters.com. their deals appear to be more reasonable as I see and may compare.

I advise you to compare all web hosting services, as it is a top priority for your new web host business to be well-provided with all necessary tools.

Who knows.It mightbe reasonable and might not be. Better use the one I personally know to be good - 4goodhosting.com