I've tried most of these Protein shakes on the market, my observations are:
1) Fuck MuscleTech, they are overpriced for all their supplements, not just protein shakes
2)For whey protein, i used to getthe Myoplex, damn they taste sooooooo good but if i rememeber correctly, each pack had like 50g of carb, so i havent been having those in a long time. For the past 3 years, i've been buying Higher Power Protein Powder from BB... the price is very reasonable, and the taste is amazing compared to most of the crap out there. I see optimum nutrition being the highest selling protein powder, but i cant stand the taste of it..Higher Power protein has ( i think) 22g of protein and 2-3g of carb.
3) The best casein protein in terms of cost and taste is by far Matrix 5.0. The teaste is amazing IMO, specially imagine having 2-3 scoops everyday for the next 10 yrs whatever... its been 3 yrs for me and the taste is still good... Trust me i have tried some other stuff out therewhich i seriously would gag after 3-4 weeks, the taste just gets old....