What city in America has the best weed?

I'm curious, which city in the United States would you say boasts the finest quality of weed? Is it perhaps a bustling metropolis known for its progressive attitudes, or a more laid-back, rural area where the greenery thrives? Are there any particular factors that contribute to the reputation of this city's weed, such as the climate, the culture, or the skill of the growers? And, of course, the ultimate question: have you personally sampled the wares of this esteemed city, or is this purely based on hearsay and research?