Honestly I can see why some people have a negative opinion of them. I was pissed when I found out my trainwreck had ninja'd some pollen sacks on me. I also believe that they tell a few lies in some of their videos regarding which week of veg the plants are at. Their 100% no-hermie guarentee has been proven to be complete bullshit.
On the other hand, they do have some very nice genetics, and they don't hermie uncontrollably, in the odd case that they do. Trainwreck, Cheese, Super Lemon Haze, Lemon Skunk, The Church, Great White Shark I can honestly say are all pretty heavy hitting, tasty strains and they yield a pretty decent amount. Some are easier to grow than others but i don't think you will be disappointed with the final product, even if you have to do some banana hunting twice a week.
Having said that, my experience is limited. ive grown out some Nirvana gear and alot of Greenhouse gear. Slowly starting to try the other top breeders such as DNA , Serious, Barney and TGA. Diff breeders have diff goals and you can get a feel for them as you grow different gear out. I'm excited to smoke DNA's as it looks like high quality and the plants seem a bit more hardier than greenhouse's (can take higher nutes, more vigor, tighter nodes, higher yield). We will see how they compare in the end.
Anyways good luck with your grows!