I've got over 30 sites and more than a half is hosted with BlueHost. Their support team has proven to be helpful, knowledgeable and I think they really care about their customers.
I use two more webhosts and BlueHost is my favorite at the time. I have much less problems with them than with others. when I signed up with BlueHost I had a sudden call from their staff asking me if I had everything working OK, and it was really pleasant to have that call. It shows that they take care of their customers. They really do. I never had my uptime more than they promised, and everything works like Swiss watch. Isn't it great when a company keeps its promises? I think it is. It's terrible! I had this 2 hours outage and they kept telling me it was my ISP problem. But it wasn't! I've pinged online friends from around the world, no one could reach my site. I told this to support and they once again said it was ISP problem not their. I'm with BlueHost for almost a year. It's fine most of the time, though there are outages every now and then. It seems like my site is up only 90% of the time. I wish they at least notify the outages.