i also hold mostly ppc but when the btc prizes were rising so steadily i had to pull the plug and sell of all my ppc because they are tightly coupled to the bitcoin exchange rate by now. i hope this will change when ppc/usd was supported as a currency pair as with litecoin. and since trc/btc is disappearing soon there would be some space for a button in the bar on top of the trading view.
i switched from vircurex to btc-e two month ago because of the far higher volume in ppc trades there. don't have to always buy with or sell to btc as intermediate step in my case would be very convenient. but it works out the way it is for the time being.