I have done some in standard paint buckets but they are very old and would like to restart with food grade buckets with good lids for a worm bins. Hard to tell which might be best in terms of sitting inside one another and good but not too tight lid. I am making a couple for a buddy too so would like 6 buckets (3 lids only needed but 6 is fine too). Thanks for any help choosing which vendor would be best (a link to amazon or other would be great)