Go with the two-tone. It's beautiful. (In the interest of full disclosure, I'm biased against white gold. I hate it with the fire of a thousand suns. It's an alloy that will dull and turn slightly yellowish over time and will need to be re-plated to keep its bright, white, shiny luster. It's a poor man's platinum, basically. I have few words of wisdom, but among them is my advice to young women: Spend your money on classic handbags rather than ephemeral trends, and if you can't afford platinum, buy yellow gold. It's pretty, and "white gold" is the devil.)
Actually this is not true. The alloy on the white gold bezel is specially crafted by Rolex to not tarnish; it's palladium not rhodium plated. This is what my AD told me and you can confirm this by perusing any Rolex forum site or even calling Rolex. I love all gold metal colors whether pink yellow or white. On jewelry yes white gold can be a pain because it needs it be redipped but underneath the gold it is yellow gold and redipping is only necessary after a while. Also many high end jewelers use white gold in high end jewelry whether vca, Cartier, chopard, Piaget etc. and IMO it is definitely NOT the poor mans platinum.