Hey all,
I'm confused regarding the various markets of BTC. mtgox is always highest but I've heard they're having issues with USD withdrawals. Then the other two for USD seem to be btce and bitstamp.

How do I go about deciding what market I should use? Is it simply a matter of go with whichever is worth the most? Are some more reliable than others? Fill me in as best you can on how these markets work, if you can.

It's annoying because I want to track the BTC value in USD via apps on my Droid, but some apps use one market, others use an average of all markets, so it's a pain to figure out what numbers I should be using to predict how much money I'm making via mining.