For those who are bored of ordinary 808/909 and even 606 sounds, that might be a finding.
The engine is super powerful (I would even say Roland TR-8 doesn't have even 1/3 of functionality that TT-78 or TT-606 has) - including clips (frequently used phrases), nuances with sync LFO, up to 64 steps per pattern, live recording, separate outputs, drum kits and 9 songs - super nice set of features.
The sound is typical CR-78 'Phil Collins and associates' alike, pretty useful for dark/cold wave as well.
The only small personal drawbacks are only paper manual and no possibility to work from batteries Device is tiny and cool to have it on the road.
And yes, manual is written very well (as lessons) and in around 1 hour of reading everything becomes clear.