Black tops could be anything. If you mean the Providers then sure they will be better than Sermorelin. In regards to other brands of HGH well I don't trust any. The GH market went bad a while back but it seemed to pick up loads but in recent times it seems to be going back. I genuinely wouldn't feel safe recommending any UG HGH to anyone. Unless you are getting pharm garde hgh from a pharmacy there will always be a risk... a very high one these days.