I agree that just mining LTC doesn't cut it nowadays, but when you decide daily or multiple times a day what to mine or eventually use a good profit-switching pool ROI comes much quicker.
Coinwarz is a good start to get an idea whats profitable today.
Also at my place we have better prices for leccy in the night, so when profit-ratio is suboptimal, my miners automatically run only through the night. Sure this moves ROI further into the future but on the other hand I am only running when reasonable profit is possible.
Sorry if I hijack the thread a bit here, but does anybody have any recommendations for reputable sellers of scrypt mining gear ? I am especially after more A2 Terminators (90 or 110Mh/s). Zoomhash seems shady after some discussions I followed around here.