Hi, have you tried the Klipsch X10i or X11i. From what I've read, the bass on the Klipsch are quite good considering their balanced armature design. Quality may be an issue as it is Klipsch but it has a microphone and small factor like the ns800. Hope I've helped.

Judging by your liking for a warmer sound, the Shure SE 535 or SE 535 Red Special Edition suit you better as they have a far warmer sound with two woofers and one tweeter.