You can spend hours looking for reliable reseller hosting service. Why do I think so? Well most of the companies, which provide hosting services, write that they are reliable, trustworthy with great customer service. Looking just at their websites won’t give you a clue which one to choose.  I recommend searching for more detailed information and comments about them. Definitely topic related forums are fantastic source of information. Some of them are paid, others free. There are also many articles on the web comparing various hosting companies. People write reviews listing advantages and drawbacks of various hosting companies. That information combined together should give you plenty of data to choose the right hosting company.