I have to say, with the upcoming difficulty jump project to be 350k, I agree.
Estimated 384995 in 911 blks
Yeah, couldn't remember exactly what it was...
Basically though, the last three difficulty jumps have been 45%, 60%, and soon another 65-70%. I think anyone who buys more hardware right at the moment is pretty stupid, or at the very least, an extreme risk-taker. I don't see difficulty slowing down any (a recent poll I made suggested that 40-50% of miners are still buying new hardware), so unless the value of BTC gets a magical bump, there's just not going to be any profit in mining in a very short time.
Now, with regards to the OP's rig, he's looking at a net loss of $29 in the first month according to my spreadsheet, with 10% depreciation on hardware, and assuming no rise in the value of BTC. At 2 months, the loss rises to $183.
Basically, unless you are building this rig to game with, or use in some similar manner, you're better off not building it at all. At the very least, if you're looking to spend money on a rig,