Best Power Cutter/Miner for Free?

Im using RSBOT right now and its alright but it seems like it has just been gaining very slow and gets stuck in a couple randoms at times. Is there any client that is better or maybe a better script i can add to RSBOT to help me out? Right now im using AIO chopper and would really like a power miner because it didnt come with one. I am using a MAC so if you could give me clients i can download on this or just give me scripts?
Thanks,
Cheftz