Justhost is a fairly good hosting company from my experiences. However, if referring to lately customer reviews I would saying they are dropped a bit in stability and quality. You may check out here - http://www.mybestratedwebhosting.com/web-hosting-reviews/justhost-review.html (my own website of course).
I am on shared hosting with them.In the first year they were ok. Then they started to suspend my account without any prior notice for different reasons and pushing me to pay dedicated server.I do not need dedicated yet. I am thinking about switching to an other hosting company right now.
justhost is a bit oversold lately. Their oversold causes problem in stability on a whole server. They used to be a good hosting company with good uptime and quality services.