oooh crizap. bitcoinwisdom still has '50' listed in their litecoin profitability calculator. Second time that's happened to me. Guess it's only 340/month! 
You'd be wise to trust your own calculations for profitability.
Rented out, 315mh nets about $390 a month.
I was getting about .05BTC every 18-20 hours at nicehash with my 900-930 MH/s, which was much lower than mining straight LTC at litecoinpool. Which rental are you referring to?