I forget the site, but there is one that shows the most profitable coins to mine. BTC is usually #1 from when I checked. So, even mining a fraction of a BTC and then buying some PPC is usually better than mining PPC. But, if you find a coin you believe in, then mine it for sure. (And double check my words)
IAS
IAS
This is the one I usually think of - http://dustcoin.com/
...but in digging that one back up I also came across a similar, if much more comprehensive, alternative - http://www.coinchoose.com/
In terms of SHA coins they both show mining BTC to be the most profitable option at the moment, although another massive difficulty jump may change that. Or not, I suppose. Time, and relative values of the crypto-currencies, will tell.
Coinchoose demonstrates what I said about the sha256 alt coins being undervalued. It's because none of them have a strong community following, they are all mine and dump coins that are not used in commerce, so they fetch way less than they should be given the cost of the specialized gear to mine them. I can make more daily profit with a $300 GPU than I can with $300 ASIC, and that's because the ASIC miners just dump coins at market price and drive the prices down. The ASIC miners should select one coin to elevate as an alt and support it's price. Probably TRC as PPC is a dud for confirmations.
