My experience has been that massq has some great products in terms of quality. However, even though the quality is high, it does not mean the product itself is very effective. I just used some norabol(prohormone), phenyltropic and thier protien for 6 weeks. I cleaned up my diet a bit and lost 6% bf and an overall 4 lbs of weight. The end result was 11 lbs lean body mass gain in the 6 week period. My main reason for this route was to look for sides from the prohormones prior to a real cycle. Many report worse sides from prohormones than the real deal.
All in all, its really hard to say if the norabol did any good or if I would have made the same gains with just cleaning up my diet and adding the protien(great stuff by the way). The phenyltropic they have is good stuff too. Anyways, I have been training many years, but just went through about a year and a half layoff and still getting back what I lost during that time.
I guess if your friend is at a platue, it may be worth a try, but honestly if he just wants some muscle and has not progressed very far on his own yet, just add some good protien and a clean diet. If he is 20+ pounds up on the game, I think he would get better results from the real deal. I just started fina/winny/T3/clen cycle today and in 6 weeks or so I will see how the gains compare.