The best website i can suggest you is preev.com. It gives you a real time statistics on different assets exchange
You can check current bitcoin rate to your preferred currency.
This is specific for the price checking of bitcoin and this is what I've been using most of the time. Real time updates and it's very fast in accessing. And also you can check coinmarketcap.com for the whole crypto market and specific with bitcoin market.
I too use preev.com, I also have read that it is very quick to pick up price changes. That might make it extra-volatile though if you just want to know what your BTC that you own a re worth.
I also like ounce.me, it's BTC price is based upon some kind of average, which might be just as well. ounce.me also shows the four precious metals prices, crude oil price (WTIC), the US dollar index and the S&P 500 index. Very handy!
kitco.com (the gold site that most US coin shop retailers check for gold pricing) has a BTC price link too, it is also an average price.
blockchain.info and MANY other sites show BTC price as well.
ounce.me and preev.com are my two favorites.