Well Myoplex is an MRP and the protein is just...well...protein, so it's hard to compare. Both taste great. I've found that it tastes much better when you blend the Myoplex w/ four ice cubes instead of in a shaker, but all in all Myoplex tastes great.
I think that EAS has the best tasting whey protein on the market. Try mixing a scoop of vanilla w/ 1c fat free vanilla yogurt and 1/2c fat free cottage cheese. Lots of protein and fills you up.