Nope, it is not just a little EZ. I have both. The siren is much more slicy and edgy than the EZ. It is MUCH easier for a lighter paddle to play boat with. The siren is great for cartwheels and stern squirts, and the EZ is hopeless at this if you are 115 lbs like me. The siren also feels a bit longer and faster, and I have a few friends who love it for river-running. BUT, I prefer my EZ any day for river-running, comfort, and stability. That's the plain truth. My siren is for sale. Asking $350 and you are welcome to demo it at the Golden WW park if you like.