I think titanium (and for that matter steel) tubing can be tuned to feel like almost anything - I'd assume that 6/4 ti is stiffer and a harsher ride than 4/3, but haven't test rode any and have read some reviews saying that isn't so. So it wouldn't surprise me if you could do a fair amount with carbon tubing - but I'm not sure you can make it give you the same road feel as steel or carbon.

My carbon bike isn't so much dead, as ... dead feeling compared to the liveliness of the ti bike. It's all relative. And it was something that I never noticed coming off of the aluminum bikes that I started with. I've only test rode a few other carbon bikes in stores, but that was before the ti bike, so I can't really judge whether I'd say they were dead now.

I can't say that I really tried the aluminum bars that came with the ti bike - I went on a ride or two with them and I hated them & their shape, and swapped them with carbon bars. I already had the carbon bars on my aluminum bike & really liked the shape/fit. So I swapped the bars onto the litespeed and sold the aluminum bike.

I just swapped the bizarre fake carbon seatpost that came with my litespeed for a carbon one, so I'll have to see how that feels this afternoon. Descending a hill on chipseal with the buzz off the ti & aluminum seatpost did direct a fair amount of vibration at my crotch which I wasn't exactly comfortable with.