I use the TD20 2 years now.
I apprcis: almost everything: relatively quiet, Idale in the apartment for concerts,
very large possibilities to tweak the sounds his idea, enjoyable play, very good
sound quality is the current top.
What I regret (some): rebound mesh skins, sometimes hard to master rimshot internal sequencer too simple, no possibility to add its samples (has come ...)
but everything is rather high at the moment.
I tried a DDrum (main concurrante): Assessment: ddrum the sounds are a little +
hot but will stop there for the rest, the TD20 is above and sometimes much!
Qualitprix report is one pricey investment, but what then rgal!
I undoubtedly would do this choice (unless there was even better coming out ...)