I faced the same dilemma about six months ago: SX3 or Silver. Went to a gun shop that had both. Looked at them, held them, shouldered them.
As was said, mechanically they are the same gun, so it comes down to aesthetics. The Browning had very plain wood, no gee-haws. The SX3 had gorgeous wood, so nice I thought it was fakewood (ala Beretta). I pulled the forearm off and, no, the wood was real. I bought the SX3.
I don't care all that much for the silver finish on the metal, but the dullness is a plus. The red accents look kinda' chintzy, but I've gotten used to it. I like the stock's adjustability. I shoot it well, but it sometimes releases two shells upon firing. Gun still cycles until empty, even with an extra shell floating between the bolt and the lift. Go figure.
All in all, I don't think I made the wrong decision. Only way for you to tell which you like most is to pick each one up and examine them closely.
Often wrong, never in doubt...