I was lucky enough to get a NOS Defender stick on my machine.
After using it for a while, I'd be ok with a Happ Super, with the base cut to allow a close reverse button, and replace the bat handle on the super with a ball top. Also, cut a slot so it only goes up and down. Keep in mind that I haven't busted 100k yet, so it's possible if you are a hard core Defender player, there may be some nuances to a real stick vs the setup I just mentioned.