Managed hosting is always good if you're not 100% sure what you are doing regarding server management and configuration. It will mean a significant increase in pricing, but untill you know your way around these things better, it is definitely worth it.
However, I would check reviews of the host, if there management services are any good. If you cannot find any reviews, try sending sem questions to their tech support/ live chat support and see how they react (If they respond within a reasonable time window and with a knowledgable reply, it is a good sign)