Chimera- gf x bb, highland mexican x bb, and calizar were all excellent smoke.
Mr nice- ssh was decent, mango haze is the best to date I have tried.
serious- Kali mist is a excellent sativa high, white russian was pretty good, ak47 was decent but I hated the taste.
sam the skunk man- his haze x skunk cross is often overlooked by people, one of the better haze crosses imo
Tom hill- his haze is all around a good smoke. Grow 3 packs and find the acid pheno.
tga- Jack the Ripper is the best 8 week strain I have tried to date. Jc2 was awesome to. I hated ace of spades though.
cali connect- I know they aren't to popular on this forum, but tahoe og turned out great for me, total lung buster.
dj short- f13, payed a 175$ a pack and got two seeds to germinate out of two packs. Both males, go figure.
those are the only breeders I have tried. I'm gonna run some gear this year by Rez, sannie, escobar, and maybe rare dankness.