One thing I highly recommend anyone using sampled pianos, particularly WS or arranger based ones is, go play a REAL piano. As much as you can.
There's a horrible tendency to accept tinkly bright, brittle pianos in a mad effort to cut through a mix like a knife, but play a real piano and you quickly realize the depth and warmth of them. In the case of arrangers and WS's, I feel it is better to have a warm sound and sometimes settle INTO the mix rather than be stuck on top front and center.
The article is handy, but little replaces that intimate knowledge of the sound you gain from playing the real thing.