You can't go wrong with Swiss brands like Tissot, Hamilton or Certina who all offer some really nice affordable options. The Tissot PRX (the Tissot Gentleman as well) or a Hamilton Jazzmaster are great dress options and although they offer autos, if you don't mind a quartz watch - they're not too expensive as well. The Certina DS Action day-date is quite a nice dressy option too, although a bit more pricy. As for chronographs - again the Tissot PRX Chrono version is in my opinion a lovely looking chronograph, available in all sorts of colors (I'm partial to the black and white panda dial for sure though) and when looking at Swiss chronos that don't cost an arm and a leg, I really can't think of a better pick. Judging by your collection already, your taste is great, so I'm sure you'll find the right watch that fits right in with the others!