I always thought Wang Liqin had the best FH in power, spin, form, and just overall penetration.But his game is not as solid and complete as Ma Long. Or maybe WLQ's forehand looked better because it was still during the speed glue era, while ML has to be content with booster.
I think you might be right. He was one of the golden standard of forehand. But I think that tall players with the proper technique can have the nicest looking form. WLQ, Xu Xin, Ryu Seung-min... very hard to make a choice among them.
In homage to KTS; I also use a 10.5mm thick monster of a blade.for me
Kim Taek Soo
is the fh king