i need some help on deciding which ISO programmer to buy. i have been looking at the xtreme pro, NEXUS quad crystal, and what about the DSS REV programmer? would the DSS REV be the best so i could program rom cards and DSS REV CARDS or will the NEXUS and Xtreme PRO do the same thing the DSS REV ISO WILL DO since they also have the 3.68 crystal.