I would think it would be fairer to compare the Roland td30kv and the Yamaha Dtx900k instead,
I like the feel of Roland cymbals myself, and i like the fact that the mesh heads are changable, but there is something that i am not impressed with roland is the fact that the crashes does not have a bell trigger,
The snare drum only has one trigger for the rim and if you cross stick too hard, you get a rim shot sound.
What i like about Yamaha is the fact that it has 3 zone trigger on all its cymbal except the hi hat,
And for the snare, you get to hit between 2 seperate rim trigger to get either a cross stick, or rim shot sound, you will never get a rim shot sound when playing a cross stick.
Furthermore, the Yamaha dtx900k has functions for you to add on your own sounds into the module, and you can plug in a microphone and record your own sounds using your voice.
If anyone is interested in getting a Yamaha dtx drum set for a good price, Sms me at 81682441.