You will find many Hosting providers who advertise that they are reliable enough and they provide Managed Hosting services. You should check the customer reviews on different forums and websites before selecting any Hosting provider otherwise you will find yourself in a big mess if you choose a wrong provider. If the hosting provider advertises that he offers 24X7 Technical support, you should check their level of management by initiating a Live chat, call them or mail them in Midnight or in weekends. If you get a positive reply from them, you can consider them as reliable and opt for their hosting services. You should check if the hosting provider has any moneyback guarantee or not if you are not satisfied with his services, so you can be sure enough that you will get your money back if you are not satisfied. SLA and TOS should also be checked before signing up.