Hi @JSBjr, welcome to our Community!
The type of plan that you need, depends purely on your needs, and how much space your files are going to take-up in the account.
Keep in mind that Professional is a personal plan, along with Basic, and Plus. If you're comparing Plus (with 2TB) and Professional (with 3TB), you can see the features each plan provides, here.
If you need extra help, let me know!