I prefer to lead 3rd/5th vs suit contracts. Then I lead lowest from xxx. In NT I prefer 3rd/5th from strength else 2nd (or highest). From xxx I lead the highest of 2nd depending on which spots I've got. 7 from 97x, 5 from 543. With my most regular partner we lead 3rd/5th in partners suit only (vs NT and suit), 2nd/4th else. vs NT in an unbid (by partner) suit what I wrote about leads from xxx above apply.