I have handled Citoris, but I have not had the opportunity to shoot one. From what I have read and heard it is one of the worlds most respected over/under shotguns.
With all that said, I just bought a Cynergy Classic Sporting with 30" barrels. I have had it about 3 weeks, and put my 675th round through it yesterday. I absolutely love the shotgun. It seems slimmer and a bit more nimble than the Citori to me.
I also have a Beretta 686, and the Cynergy seems more "Beretta like". As far as the styling of the Cynergy, I'm not put off by it, and again from all I have read the "Inflex" recoil pad is very effective. I do prefer the classic styling, but I wouldn't rule out a "Euro" style Cynergy.