I think robotzindisguise allow their ppwerminer for free, i would reccomend that for your mining. Use that to like 80-90 then switch to a powerbot runite miner to make cash.
From what I can tell that's 4 of 24 public Mining scripts posted on Villavu. If you're looking for levels and profit both, I personally recommend Ashaman's LRC miner. I've used it myself, it's very fast at what it does very much stable. You can tell from everyone's 100/200/300+ hour progress reports.