Rocket v Profitec Espresso Machines
In Melbourne, Rocket espresso machines are really pushed by some Rocket-focused stores as "the market leader." Take this with a grain of salt. Take a quick look at international websites and reviews and you will quickly see that Profitec espresso machines are highly regarded by home professionals worldwide.
For an example, consider Rocket R58 v Profitec Pro 700. The Profitec Pro 700 is ahead for:
External finish and precision / tolerances
Internal layout and design
Stainless steel boilers
2.0 Bar steam pressure (v 1.3 Bar)
One piece powder coated chassis
Stainless steel drip tray rails
One piece cup warming tray
Proprietary sprung valves
Integrated PID and a shot timer
Rocket coffee machines are at the high end, but I reckon Profitec is a better choice. As a retailer of Profitec I'm obviously just a little biased (yes, I admit it) so don't take my word for it. Take a quick look at the video reviews below of firstly, the Rocket R58 espresso machine, and then secondly, the Profitec Pro 700 espresso machine. The 3rd video takes you into the Profitec factory in Milan.
An Italian espresso machine is a big investment so invest time in choosing the best machine for your home.
Happy hunting :)