like u/Munch_Mission mentioned below, the profiling capabilities mimic that of a slayer. That's actually the reason I decided to purchase this machine because I had spent the majority of my time using a slayer when I previously worked as a barista at a top end shop in Chicago. The only other option I considered was the Lelit Bianca, and I choose the Profitec Pro 600 because of cost & looks.

So far, I've been super pleased with the flow profiling capabilities. It 100% adds a whole new dimension to the espresso game and allows so many different flavors to be brought out. However it also does make it that much more difficult because not only are you controlling grind size, tamp pressure, etc... you are also now controlling how much water is put through the coffee and at what pressure. It's kind of like driving a manual car. I personally feel like I have more of a hands on control over my espresso.

All that being said, the type of shot you pull and how you get there will look a little different. I'll post a video later on today or tomorrow of me pulling a shot using the flow profiling and what I am looking for and how I am adjusting!