Definitely the best of the 303 emulators. I've used the older TB-3, X0X, and TT-303, but this one features all the features and programming options of the original plus some nice modernization like internal soundcard via usb, delay (tape emulation or digital), and distortion (3 different distortion modes). CV/Gate/Trigger options are awesome for integration into a modular setup. Main drawback is the 1/8" cables are hard to find in a suitable length for a studio set up.
this thing sounds like a 303 that woke up on the wrong side of the bed this morning, crunchy and raw. super fun to program thanks to the 303 style sequencer function and Last and definitely not least, CV GATE OUTPUT, hook this to any modular setup and its like a acid bass video game controller. so much fun