So, my binder finally gave up the ghost and I just started a job, and I need to put the money forward to get some new ones. I had the Underworks Ultimate Concealer Tank in XS, which lasted about a year and a half as my day to day binder. I can afford to get about 3 of those right now, which should cover me for the next year or two since I wore the one I had almost everyday for a year-ish. I am also looking at the LesLoveBoat's 3rd Gen Jersey Mesh Short Binders, but could only get about two of those and I have no clue how they work or if they're comfortable.
When I first got my Underworks it worked very, very well and I had no troubles with breathing or passing. I wish money wasn't an issue, then I could afford to get them both! My chest measurement is about 31" around my widest part, so not a lot to bind.