It's not necessarily the handling, but if you're having to drop stuff below the front end of the bike you can run into other issues - especially with all the shit hanging off my bars (aerobars, lights, USB charging, etc). It also makes for a more aero setup. It just makes more sense to me to get the frame right so I don't need any problem solver stem arrangements. My warranty frame is already in that boat being >30mm too high. It's going to be flogged to death as a winter trainer though so I'm not too fussed.
How about a CAADX in 58cm: 397mm/580mm, effective top tube 575mm. Pretty roady, wide tyres, just probably not the most durable frame out there and not sure it can take racks and such
It's not necessarily the handling, but if you're having to drop stuff below the front end of the bike you can run into other issues - especially with all the shit hanging off my bars (aerobars, lights, USB charging, etc). It also makes for a more aero setup. It just makes more sense to me to get the frame right so I don't need any problem solver stem arrangements. My warranty frame is already in that boat being >30mm too high. It's going to be flogged to death as a winter trainer though so I'm not too fussed.