MRP
As for the Mega MRP from GNC it is a very good product. I have been using it for about 6 months and find that it tastes good, mixes well and is cost effective. As for GNC sucking I will say that the main thing that sucks is the non-gold card week prices. GNC usually gets MSRP for everything they sell that is non-GNC brand so it is only worthwhile to buy there the first week of the month.
Here is another good tip for shopping at GNC only go to mall stores that have a vitamin shoppe or vitamin world in them. Those stores have to lower their prices to match the other stores and then you get your gold card discount 30% at these locations (If you shell out the 15$ the first time). Also look for what they call close dated product (anything that expires within 8 months) they will mark it down as much as 75% depending on how soon it expires and again you get the gold card discount on top of that.
As for GNC quality it is my understanding from my local manager who has been with them for 11 years that #1 everything produced by GNC is US Pharmacopia tested. #2 that GNC puts all products through a 150 point quality control inspection. #3 all products are tested for potentcy, digestability, and impact. The guy I get my info from at the local store I have know for a long time and I have complete faith in his honesty. He has also told me at one point GNC owned Met-Rx and portions of EAS and Twinlab and that is where they gathered a lot of their manufacturing processes from.
There are certain products that I prefer such as Cell-Tech for creatine, EAS for ZMA etc. but there are certain items I only buy GNC brand and I find them to be great values as well as good products. Mega MRP, the Alive multi-vitamin pack, Tri-flex (Glucosimine/condrointen/MSM) and Pro Performance Amino 1800. I also take a ton of non sports related supplements that GNC makes and find that my health is top notch.
So does GNC suck? No but the prices are only good the first week of the month and yes they put lots of mom and pop shops out of business but many of the GNC stores are franchises owned by individuals. The net is really the best place to buy non-GNC supplements but if you need something right away or you want to save a little money buying a good alternate brand product there are far worse places to go than GNC.
If you are still reading this then you are brighter then most gym rats as they would have just moved on by now.