I just had a quick look at the geometry specs between the bikes because I'm alway's curious as to what they are building these days and there's not much difference in them geometry wise.

Only 2 things are consistently different. The OCR's have a longer chainstay by 11 mm across the board and the OCR's have a taller head tube by 15-20 mm.

The head tube angle is mostly half a degree steeper but not in every case and the seat tube angle differences was rather peculiar. Often the TCR had the more RELAXED seat tube angle by half a degree but I think the OCR was steeper as a dodgy way to make its top tube length look shorter.

What does this mean to you? Well it depends on what you can feel to be honest. If the handlebars aren't too low on the TCR then that's the most important comfort factor straight up. If you feel you wan't the handlebars higher than you can get them on the TCR then maybe the OCR is better. The OCR with its consistently longer chainstays will be a tad more comfortable on long rides and the steering is a little sharper on the TCR's.

Back when I was comparing the aluminium OCR's with TCR's the TCR's were just made a little better. The TCR's were much stiffer than the OCR's than the specification differernces would explain. A few corners were cut with the OCR's to keep costs down but I don't know whether that's the same with carbon frames as well.

Regards, Anthony