My new Sirrus Comp has the zertz on the seat stays and front fork . . . Specialize offers documentation to show they work, but I think it really is just a marketing gimmick with cool looks.

As for the carbon seat post, a very subjective opinion -- it is nice. On the three longer rides I've had on the bike (30+, 40+ and a 60+) my rear end was not complaining about the time in the saddle. The saddle is stock, nothing special, so I have to think the carbon post helped smooth out the ride, as compared to my old ride (an old mtb.). Of course, my experience is very limited and I cannot speak to the durability of the seat post . . .