Picked up my Par 910 with vipec today from Brad. I am a true believer of the vipec. Brad sat down and went over probably a 1/4 of what the software has to offer and it's impressive. You can control ever aspect of your sled though the vipec. Just to be able to tune from your garage and not have to worry about taking your sled someplace make the vipec worth it to me.