I can't give you anything quantitative on the relative flight speed of the Slow Stick and EZ* but the Slow Stick is definitely much slower. I actually find that the SS requires more piloting than the EZ*, however. On takeoff, the SS wants to zoom up to a stall and pulls to the left. You have to fly it through this - its not hard - just requires some attention. The EZ* just climbs out nicely under full throttle with little or no intervention. The EZ* also takes more room to make its turns and glides so well it needs more room to bring it down. I fly in a really large field but if I had fly in a confined space like a baseball field I would definitely prefer the SS. If you have the space, you won't notice the slight speed difference with the EZ* since it is so docile. You will really appreciate it if there is a breeze. I have easily flown in 10 mph gusting to 15 (that is measured at a NASA facility about a mile from the field so it isn't a guess). That breeze will flip a SS over just sitting on the ground. I'm sure the EZ* can take much more wind than that and I look forward to stretching my flight envelope in some higher winds. I love them both, mind you. They each have their charms.