teletype is indeed very awesome. but when you already have a monome and modular, the trilogy (or a subset of it) is a no brainer. if you can’t afford more than one at once, the ww is always a great start. and lets you try 3 different firmwares (ww, kria, orca). meadowphisics is a beast at clocking and much more.
my setup isn’t drums-centric, but I do love my digital noise module, vcnoiz, which has a pitch knob. it sounds very lofi when turned down.