I did the 'fly removal on an '06 ZX14 and an '09 C14. It does the same thing but the difference was not as dramatic on the Connie. I suspect because it's already been "retuned" for more low-mid power. I also just did the reflash on my '12 ZX14R. The differences between ECU or reflash you note will be very minimal, unless you're a racer. The reflash is very simple and quick turn-around. Or, at least is was w/Don Guhl and Brock's. I was very pleased w/all results.
Out of interest, I also have a Raider. It is a very comfortable, nice bike. It has very good power but that is largely muted by the friggin' weight of the thing. On a cruiser, though, who really cares. It looks, sounds, and pulls good.