I just picked up a 16x3 v2 from sheldons hobbies for $105. I used it on my 2 yr old 3000 panasonics, and it charged them with no problems. I also have a 16x5 v2 and absolutely love integy's products. If you dont want to spend over $200 for a charger and power supply (yes, a power supply IS optional) than the 16x3v2 and 16x4 are darn good chargers for the dough.
Also the quasar pro is very good, it should be its made by integy. The regular quasar (non-pro) is good too, but doesnt have a display and the peak detection only goes down to .05 millivolt, some batts require .03 millivolt like the panasonics.