I would dare to say the only thing electronic drum wise out there better than a real Roland TR-808 is the Tiptop Audio Eurorack drum modules. The reason I say that is each module actually gets the sound right but is also controllable in a creative modular environment. It’s not just the sound they get correct. It’s also the pressure or chest feel. Tiptop gets it right. The fact that you can then take these sounds a throw them into Euclidean sequencers, Echophons, Plague Bearer’s etc is just fantastic. They just released the MA808 which emulates the TR-808s Maracas. $99 USD.
“The MA808 is Roland’s TR-808 Maracas sound generator adapted for modular
synthesizer use.” – tiptopaudio.com
For more info: tiptopaudio.com/ma808