are peltiers with a heatsink really better than the usual heatsink/fan combo? i would really like to know because im about to invest around 50-60 bucks on a PelTec combo which includes a 68W peltier, a 25cfm fan, and an alpha pep66 heatsink. are peltiers safe, and if anyone out there has a peltier, can u please reply to this thred. thanks