Funny you would ask about the color of my wife's hair
she is a natural blonde!
The board does sound awesome. I'm blessed I'm in a position to keep both, if I had to give up either or I would have a tough time deciding. I don't believe one is better than the other, they are both fantastic arrangers. I do think that the T4 may over a little more versatility for the same reason you mentioned "the plethora of styles". There are just some tunes that work better with the T4 "free styles". The SA2 voices are hard to beat as well, but then there are some killer organs and guitars on the Pa3x too.