I've found that with 3-4 years a CoRo can be divine. Some Siglos are better with age, and BHKs are also very good to some. But the hold up is with basically everyone that they're massively overpriced compared with what some could or would get at the same dollar amount.
I mean, for me, I would love BHK54 at 18-22. They'd be an amazing stick for that cost. At their price, they're good but I can't afford to get them often.