ACE and Cannabiogen have good stuff. Good strains if you want to make your own hybrids. They're a good place to start if you want to dabble in breeding. I have grown a lot of ACE and have never been disappointed. I also like the fact that they have accurate descriptions for their strains and post the Lab results for most as well. Plus they put Dates on their packaging so you know how old the seeds are. Little things like that show they care about keeping their customers informed with as much knowledge as they can regarding the products. It's too bad they don't ship directly to the US. But plenty of seed banks carry their stuff.
I'm smoking what's almost the last of some of their Ethiopian and have a few Golden Tigers going on 8 weeks of 12/12 with another 6-8 weeks left.
I think many are put off by some of the long flowering times with many ACE strains but that's what you prepare for when growing sativas and ACE has some good ones that are well worth the wait. Seems these days many people look at the flowering time first, then THC when determining what to grow. And there is nothing wrong with that if that's what you want. It's hard waiting as long as some strains take but if you wait it out patiently you'll be rewarded with a product you can't get unless you do grow it yourself.