Most of my bikes are steel. They all ride completely differently.
Frankenfixie is Alu, and it's great to ride, quite similar to my CroMo MTB tbh. The Airnimal is also Alu (I believe) and that feels different too. Actually, isn't the Windcheetah Amuminium? The really feels different to ride.
The Audax bike (531) is great to ride, unless I've taken the luggage off, when it feels light and wobbly. The one time I rode a carbon bike that too felt all wobbly, but I was scared of dropping it and shattering the frame.
Even just changing a basic component makes a bike feel different. FrankenFixie annoyed me with fairy attacks, so I stopped at the LBS to change the tyres from whatever was fitted (paper thin
) to Marathon Plus. I had to learn how to ride the bike again, it felt so different.
Ti? yeah I'll probably ride one at some point and say it feels different.