Groestl seems to be nice for me. I tried equihash but my computer lags so much with that. Also tried Tribus, seemed to have decent speed and profit. Not sure if Groestl or Tribus is best for me. I'm using my computer at the same time so I need a algo that doesnt make my computer lag too much. CCMiner seems to be the best option for me. I'm using ver 2.2. Seems to be 10% more efficient on Tribus than 2.1
Investing in mining but don't want to fully commit ? That's just not smart man... Anyway best miner overall is claymore's miner. There is intensity setting that you can tweak if your pc is lagging too much