I'm not so much of a Thai aficionado, but I am a sushi aficionado. I can tell the difference between "real" sushi and "Americanized" sushi, and I sometimes appreciate both, but for the most part I stick with the "real" sushi. I am not sure if I would be able to make this distinction for Thai food as well.
Thai Sky is my favorite Thai place thus far with Rice Thai Kitchen a close second. I hear these are as Americanized as about every Chinese restaurant on every street corner. I am still shocked to hear this, but I have nothing to compare to. If I love these restaurants, will I love Sripraphai, which I hear is by "leaps and bounds" the best thai in all of New York, absolutely hate it or is "real" Thai just so different from "Americanized" Thai that it's like two equally good, yet totally different meals?
And P.S. I hate most Pad Thai... it's like the California roll of Thai food and is usually thrown together terribly and quickly because Americans can't distinguish between good and bad Thai.