I love both of these options but there are reasons why someone might want to use one over the other.
First I should state that I am an affiliate to both of them. This doesn’t change what I am going to say. I am not being paid by them and I have not gotten any money from them. I don’t sell my integrity. I will rent it, however.
If you need a visual webpage-building tool then obviously Elementor.com is the choice. You would need to buy a subscription for $50 with Rocket.net since that is a third-party app.
If cost is an issue then Elementor.com is a better option. It offers a totally lower cost of operation than Rocket.net.
If top speed is your concern then Rocket.net with WP Rocket (3rd party purchase) is what you want to do.
If you are an agency with high-end clients they both might like either option. If you need 30 days of backups go with Elementor.com. Rocket.net offers 14 days of backups.
If you have heavy traffic then Elementor.com offers more bandwidth. However, Rocket.net automatically optimizes your images so your bandwidth may be surprisingly low. I have never seen such low bandwidth on any hosting provider due to Rocket.net’s automatic image compression.
If you are a WP beginner to medium user, either would be a great choice. The more advanced you are the more you may want to control things with specific software and so moving to Rocket.net might be more advantageous for you.
I hope that helps you decide which is the best fit for you. Please click on the affiliate link below so that I can continue to provide useful content. Thanks. If you like Elementor and want to get started click here.