The grudge against the [then] owner of US Rockets that you might have read about on RMR dates back over 10 years. The story goes that many consumers, and some vendors, sent orders, but merchandise was never sent. There are other stories of lawsuits and such. I only learned the details about 6 years ago when I asked about Firestarter motors. The owner, himself, consistently maintained innocence. There's always two sides to every story, and the truth lies somewhere in between. However, when you have a significant number of people telling their own variation of the same story, some who are willing to produce paperwork as proof of their story, the truth tends to gravitate in their direction.
As for the products themselves, I haven't heard too many bad things. Are they making Firestarter motors again?