There are a bunch of alt-coins that are easier to mine as in you'd get more coins per day with them. However, for the most part, their price reflects this. Check out coinchoose.com for an immediate picture of the relative profitability of various coins compared to Bitcoin. The rankings on coinchoose are very fluid and change quickly as people now use scripts that auto-target their minings rigs at whatever coin is top of the list at the particular time. It seems that lately the profitability of alt-coins relative to Bitcoin/Litecoin has dropped off steeply. There was essentially an alt-coin gold rush a little over a month ago and it was very profitable. FTC (as you described ) was at one point beyond 800% the profitability of Bitcoin for mining. That changed quickly and in the last few weeks it's very rare to see any coin reach over 150% profitability for more than 12 hours. Those who made the most on coins like FTC were those who mined them as soon as they were released while the difficulty was low.

FTC was really the first big time profitable alt-coin in recent times. I started mining it a few days after it was released (quite late to the game) and I still made a decent amount. CNC was the next gold rush and I mined it right from the start. In the end I made about half as much from it as I made from FTC (CNC peaked at about half of FTC's peak price). The next coin I did well on was YAC and there I made half as much as CNC. WDC was another good coin but still smaller profits. From there on it just continued downhill.

I still mine alt-coins exclusively though, as they're still more profitable than BTC/LTC especially if you choose the right ones and buy/sell them at the right times. At the moment I'm mining and trading Digitalcoin.