No doubt Syntrax is one of the best companies around - they dont have too many products, but the ones they have are topsellers. They are mainly famous for their proteins which are one of the best on the market if not the best.
The protein profile is awesome (check NECTAR - 0 carbs and fats per serving and it is whey isolate) and i love the taste. Matrix is also a very good tasting protein but it is a protein matrix - it has different sources of protein in it. They have plenty of different flavors to choose from.
They also have very good products for loosing fat - see FYRE, Spyce and Guggulbolic - all those are topsellers (esp FYRE).
They have some other nice products, but the above mentioned are the best. You can see their website at
www.si03.com.