Choosing the best web hosting plan for your website depends on several factors, i.e. the platform on which your website is build, type of website (e-commerce, blog or social media etc.), and traffic etc.
You have only mentioned the number of unique visitors per day. If you’re a blogger with 30K unique visitor per day, a good shared hosting plan is enough for your website. But if your website is an e-commerce portal with same traffic, you should go for either a powerful VPS (Virtual Private Server) plan or a dedicated server hosting plan as an e-commerce portals are usually heavy and needs an advanced level of security.
If you have such good website and if you are growing amount of your visitors rapidly then I would recommend you to take part in such project as www.webawards.top . That's great competition and it may be very useful for you!