I always wondered how much these pools were profitable. Do we have any infos about that ?
With a small rig or medium rig, I prefer a medium pool. Too small of a pool and you might as well be solo mining, too big and your hash is buried beneath the rubble.
Sometimes I mine for a while and then stop, shift work is best for me because those 20 minute shifts pay since I was there and even if the block is not solved, I can leave and not lose those payouts.