I've had two Ironmans and a 914 SE. I can't really explain why but I just preferred the rides of the Ironman's better. They felt lighter and lively out on the roads I ride than the Miyata did.
Great out on the road.
Nice but just did not stand out in my stable and I didn't have it long.
Modern build but too small really.
Funny thing is I had lusted after a 9 series Miyata for years. When I got it I was just ok with it. It was nice but really did stir my blood once I had it and it quickly was sent on it's way.