I voted PPC because it's the only one listed that does something new and useful. Everything else on the poll is a blatant copy with no original ideas besides tweaking variables that don't matter (like block time) or switching to a botnet-friendly hash algo for the sake of obsolete mining hardware.
Don't waste your money on "boo hoo I missed the boat" pump-and-dump schemes.
PPCoin excites me a lot. I honestly think the only reason it hasn't risen even further in price is because people are still trying to wrap their heads around the original ideas. It has a lot of unique advantages over Bitcoin and Litecoin, I am compiling an easy understand list of them and am putting them on a simple website... stay tuned.
PPCoin, though there's still plenty of opportunity to overshadow it.
Feathercoin is a joke.
When the next scrypt based coin that actually adds some sick features to it comes out, that'll be huge. Feathercoin is just a distraction until then.
I used to say the same about Terracoin. Yet it's got to 50-60 cents being an almost complete Bitcoin clone. In fact it almost committed suicide and still it's going strong.
That's when I realised, it's people that give coins their value... Feathercoin is here to stay imo. Especially with so many Litecoin miners backing it.
Feathercoin isnt bad to me IMO. They way i see it is that BTC and LTC have a good backing to them, and Feathercoin just expands the options better for people that dont have LTC due to the LTC hoarders. PPC is the one that just is unique to a lot of other coins there. I would like it being used someday, with BTC just being reserved for high cost, high level transactions such as buying property, while PPC, FC and LTC can replace the actual dollar, with LTC being used for the semi-high transactions such as buying cars, etc. There arent just enough bitcons to go around, especially when some people are like "OMG Bitcoin! I want one! Just ONE!. And theres only 21 mil to go around..):
Someone feel free to correct me if my logic is flawed.