I bought a Profitec espresso machine a few years ago, but did spend a lot of research time looking at all the brands in my price bracket (including Rocket). In the end it came down to which features that were important to me and style, it was the Profitec that ticked all my boxes and was easy to work on (it will require maintenance and repairs at some point in the future). I could have easily have gone with a Rocket as they're great machines with excellent reviews, consequently I believe you'll be more than happy with the Rocket.
Earlier in the year I went on a barista training course, they had pro Italian espresso multi-brew head machines and a $4k grinder. We did a few demos using the pro gear, cheaper grinders and a $200 home espresso machine. I already knew this, but we confirmed that you can make great espresso from most espresso machines - the most important component is the grinder - you need a good grinder to make great espresso. Using the $5k grinder and the $200 espresso machine gave a better result than the cheaper grinder and pro espresso station. This is counter intuitive and it took me years to accept, once I bought a decent grinder it made a huge step change in the quality and reproducibilty of my espresso's. This experience is why I make the comment that all espresso machines are equal in performance at the same price point.
I would focus on the best grinder, if you don't already have one, in your price bracket.
Here's a good grinder overview: https://nymag.com/strategist/article/best-coffee-grinders.html
This is the grinder we used on the training course:https://simonelliusa.com/products/ns-mythos-grinder.asp
Outside my price comfort zone!
I bought a matching Profitec grinder, prior to this I had a Rancilio Rocky - a great grinder for the price but the Profitec grinder was a major step change in espresso quality. My Rocky is now dialed in for other coffee grinding duties (Aeropress grinding).