Main difference between MarketingHub & Campaigns when it comes to email campaigns & integration with CRM?

Main difference between MarketingHub & Campaigns when it comes to email campaigns & integration with CRM?

Hi there,
we're currently using Mailchimp for our promotional email marketing but are wanting to move away from it to the equivalent product on Zoho, which I understand to be Campaigns.

However, I've also been told & have been looking further into MarketingHub for Lead nurturing campaigns & now wondered if I should not rather do all my email marketing from MarketingHub?

Anyone has gone that same path?