One more pro carbon point.

Carbon masts can be repaired rather easily after significant failure.

I dropped an aluminum mast and put a nice ding in it, it had to be replaced.

My HT mast was broken in half by a storm, the break was a spiral, splintered break, it was a really ugly looking break. The HT mast is back in business, sailed it last weekend, its working fine. The mast track wasnt quite perfect, I mixed up some goo and a couple of hours later it was perfect.

The more repairable, the more fixeable, the more you can easlily customize a part the better it is in my opinion. Carbon, and composites win on these points.

I've noticed the carbon supply is getting better and the prices have come down some - just as I predicted last year.