Mr Nice Black Widow is the best out there but if you don't want to mess with regs or waiting for stock then femaleseeds do a very nice Black Widow for much cheaper
Many of the seed banks sell the same genetics for white widow while other make their own versions I have herd people say that black widow is the "og" if you will, of the white widows Also that GreenHouse's version of WW is a copy or knockoff of the Mr.Nice version of WW called Black Widow to distinguished itself from the others version of WW (correct me if I'm wrong) I purchased the Dutch Passion version hopping that it is a close of a copy to the original as possible The indian/brazilian genetics for the WW seem to be inline with many others But then you run into the knockoffs which claim different genetics to make the WW I personally would like to see a bunch of different WW seeds grown here on the city to solve this issue