I dont know if greenhouse is bad, I've never ordered from them. Shantibaba used to be the breeder for greenhouse seed company before he sold his share and left to switzerland. Greenhouse is all about the money and make claims that are not true. A lot of success that greenhouse seed company claims is actually success that was achieved while Shantibaba was their breeder, for example they claim to have been the original breeders of white rhino and white widow which is true but it was shanti who ran greenhouse seed company at that time. When super silver haze, white rhino, white widow, and other strains were being entered and winning the first high times cannabis cups in the 90's under greenhouse seed co shantibaba was the breeder. It seems as though Greenhouse is able to use past glories to convince people to buy from them when now they are an entirely different company. Greenhouse seed company actually owns three coffeeshops in Holland and are nice coffeeshops. From my understanding they are not breeders they are business men. They make a lot of money and sell a lot of seeds (possibly sell more seeds than anyone) but they are not the best by any means.
But the strain hunters idea that arjan and franco (who now run greenhouse seeds) are doing is pretty awesome. They travel to places where people have been growing marijuana outdoors for many years, bring them back to Holland and are on a mission to develop strains that have been lost. Strains such as Malawi Gold and I think their himalya gold they offer right now was developed from one of their strain hunting missions. Breeders are no longer able to grow and breed large operations outdoors in Holland. Many people believe that breeding outdoors is the best way to develop strains. I would agree but there are also places where marijuana grows much better outdoors thats why I believe you will always find the best strains in places such as California.