Re: Which kick drum to complement Roland TD-11K?
Before you go off buying something. Does it not have a kick pedal? Or does it not have a Kick Trigger? These are two different things. Most electronic (and acoustic for that matter) kits won't come with a kick pedal but most should come with the kick trigger. If this is the case then all you will need is a kick pedal to go with it. If it doesn't come with either you will need both the pedal and the trigger.
Amateurs practice until they get it right.
Pros practice until they can't get it wrong.