Hello,
I also have two Rolands kc-300 and they are very good . I only use them at home...I am a home player but I only want the best.
I saw the EV SX-A100s and they cost 980 Euro for one piece... I almost have two kc-300 for this price.
But as I said I am only a homeplayer...
Sometimes I play along with my keyboard on my slidetrombone...and then it's better to have the amplification.

Greetings from Belgium,
Alain