So yeah this sounds like a basic question but there's real variation in what people swear by. I've been using a 10-inch London pattern for most work and a margin trowel for touching up joints and getting into tight spots. The pointing trowel for repointing obviously. My latest addition is a good German-pattern brick trowel which I resisted for a long time but now prefer for laying courses in confined spaces. The brand war (Marshalltown vs. WHS vs. Ox) is real and not entirely without merit, balance and feel matter when you're lifting that thing thousands of times a day. What are you using and have you switched brands mid-career?