I am currently replacing and adding a concrete pathway to my back yard, after calculations i ordered 42 80 lb bags of quickcrete to do the job. i was going to rent a cement mixer from Depot for $65 a day, im thinking it will take 2 days -- $$130.00 plus tax.. However, harbour freight is currently having a sale on cement mixers.. they have a 3 1/2 cubic mixer for $168.00, i was thinking that i might as well buy one for $38 more then just to rent one... My question is.. has anyone ever used their cement mmixer.. is it good? i know it is hit or miss with there tools... Also, how many 80 lb bags will a 3.5 cu ft mixer, mix at the same time? I also plan to do concrete counter tops at the end of the summer for my kitchen.. So i would need it again either way... as long as it works efficently.. any thoughts? thanks! Steve