I remember seeing reports on the touring forum maybe four or five years ago (maybe longer, time flies) regarding Aeroheat rim failures. I think I remember a statement somewhere by Velocity that there was indeed a bad batch of rims, and the problem has been corrected, but I'm not sure. I've got a wheelset with Aeroheats from 2008 I think, no problems, but not a ton of miles on them, and they only get ridden with a pretty good load on them, they're one of my wheelsets for my LHT. I've also got a wheelset with Velocity Cliffhanger rims, a similar rim, but heavier and more robust than the Aeroheats. I think the Aeroheat uses the same rim profile as the Dyad (the dyad is 700c), with the Aeroheat being the 26" rim, FWIW.