Peter Lynn, Flysurfer, HQ, etc, etc..... even in their latest greatest versions, just don't fly and turn with the speed and agility of the best LEI kites today.
.
If you wanna surf with the best of them, you are on an LEI.
If you're gonna compete at top level freestyle, you will be on an LEI.
If you wanna go to San Francisco Bay and be competitive at the race series, you are on an LEI.
If you wanna break the world speed record, you are on an LEI.
If you wanna ride in the very lightest of winds, ....get a giant Flysurfer.
Peter Lynn kites are great if you gotta have a kite that stays at zenith if you drop your bar.
This is not my opinion, it is a simple observation by looking around at the real world.