Carbon mix frames are the greatest marketing scam ever pulled on the public. Notice how Litespeed got rid of the scam. customerjon @gmail.com is where information happens.
Get steel. Steel is real. IF is doing a beautiful Reynolds 953, along with a few other makers. Steel is still the benchmark for ride quality and durability.
Bottom line: carbon is generally cheap, taiwanese crap. Get steel, it is getting even better than it was.
You said "generally" cheap, Taiwanese crap, but I don't like what that implies. Giant is Taiwanese and they're a leader in carbon. I've ridden a carbon TCR and owned two carbon Look bikes. The TCR kicked the Looks' asses around the block and back.
Good design and craftsmanship can come from anywhere. It's silly to dismiss something because of point of manufacture.
Have a Ti tri bike and carbon road bike both are nice rides, ie not harsh. Having said that I have also ridden Cannondales tri bike on a few 100+ milers and have to say it was comfortable and not a harsh riding aluminum bike