Rainshower head comparison

Left: Grohe Cosmopolitan, Right: hansgrohe Raindance S 150 AIR 1-Jet
I've been using the Grohe for the last 3+ years. It's a large 160mm diameter head with 4 spray patterns, but I really just use the Rain function. Being such a large head the spray pattern is quite wide. The water spray is medium thickness and has a fine touch.
I've been intrigued by the hansgrohe AIR system for some time but never got one since I was quite happy with the Grohe. Anyway, with the recent Bina Warehouse sale I decided to pick up one to try. I bought the S 150 since that was the largest size. You would think with a name like S 150 the head is 150mm diameter, but in reality it is only 137mm. As you can see from the pic it is noticeably smaller than the Grohe.
Using the hansgrohe the first thing you notice is it is louder. Must be the air injection thing. The water spray is definitely thicker and has a more pulsing feel (very light massaging sensation), probably due to the air injection. The perception is that there is more water. The marketing material says it creates a "more voluminous feeling" and that is certainly true. Later I did test the actual flow rate by filling a bucket and timing it - the hansgrohe does in fact output 20% more water than the Grohe. Aside from that when washing the head and face, yes it does have a slightly softer feel than the Grohe.
So I'm happy switching over to the hansgrohe AIR shower head. Note: to really make full use of these large showerheads you need high water pressure.
BTW both heads are made in Germany.
You mentioned "the hansgrohe does in fact output 20% more water than the Grohe." does this mean that hansgrohe do not save water?
Just Curious, to me water savings is secondary to "feel".