I have bought seeds from almost every major supplier there is over the last 20 years, dozens of different strains. Sometimes u can get lucky & get some descent phenos from the $20 cheapies like nirvana, but most of the time I was very disapointed.
I only buy seeds from Dj Short or Spice of Life nowdays, these 2 companies have always given me exelent stuff. Outdoor next season is going to be True Bluberry and Grape Crush for me, Ya I know, there $130 for a pack of 10, but its worth it.