Chrome is more 'current'.

Chrome. http://www.pinterest.com/search/pins/?q=modern%20bathroom%20faucets&rs=ac&len=18

I would suggest Chrome or Brushed Nickel.

Recently bought Rivuss Carrión bathroom faucets, brushed nickel finish, wonderful product at a reasonable rate. Available in Chrome aswell.
Quick link:

Chrome faucets, brushed nickel bathroom faucets are perfect for a modern bathroom. Between Chrome and Brass, we would suggest going for gleaming chrome for a modern and stylish feel.

We have wide selection of modern bathroom faucet. View products http://www.houzz.com/pro/rivuss/rivuss

Chrome is more current. Though Brass is trending in the high end market right now.

Chrome would go well with a modern bathroom.

Here's a modern faucet.

I feel like chrome for a bathroom really never goes out of style. Other finishes wax and wane in popularity, but chrome is about as timeless as it is possible to get.

Another vote for chrome for a modern look!

I would go with satin nickel, it does not show water marks as much. Look at Overstock. Com or Ferguson's for ideas. Ferguson's has many many ideas, all depends on how much you want to spend.

Thanks guys, bought Rivuss Carrión Chrome. Amazing product.

Thanks Alan for your recommendation.