I have my own designing company since 2007. Since then I am using re-seller hosting of Manas Hosting. I have hosted around 200+ websites with them and I should tell you that none of my client has still reported any issue regarding the site being down.
If anyone of you are just starting out with web design business or any other software company I would recommend them to go with Manas Hosting.
As they have their data center in out of India. They offer affordable prices on hosting which is required for any start up or any other company to lower the operating expenses.
I would recommend you to visit their website https://manashosting.com so you will get an idea about the prices too.