I used to point my own miners at cex.io due to the fact that they had 0% fees and the extra alt coins.
That being said, ever since I moved back to BTCGuild I make more BTC with my miners even if I pay a small fee.
And as far as the alt cons, they ain't worth jack shit.
Dump the GH power you have on CEX and keep the coins.
If you wish to mine for coins then get a few of these:
https://bitmaintech.com/productDetail.htm?pid=00020140107162747992Ce5uBuxW06D65 Ants will cost you 6.725
BTC excluding the PSUs
That's 1TH power overclocked.
More than you have now, for less coins.
And you get to keep the change