The only real answer to this question is that right now you can mine the most crypto from any given hardware in recent litecoin history. It is without the doubt the best moment to be mining, and people in a few years would kill to be able to mine .2 litecoin a month, just like people wish they could mine anything close to .2 bitcoin a month today on a small peice of hardware running on your desk 
This is where I find the disconnect between BTC and LTC. BTC is actively being developed, but LTC feels abandoned by Charlie Lee and no one has really stepped up. I still like that pooler put in a lot of work with litecoinpool, cpuminer, electrum-ltc. And you jstefanop with this ASIC miner, bfgminer, etc. Hard to say if LTC community can really step up with the coding side of it. I haven't seen any commits in over a year.