The best portable (and affordable) USB MIDI controllers | Engadget
Performance Controllers | DJ Production | MIDI Keyboard
Amazon.com: AKAI Professional MPK Mini MK3 - 25 Key USB MIDI Keyboard Controller With 8 Backlit Drum Pads, 8 Knobs and Music Production Software Included : Everything Else
Amazon.com: Vangoa MIDI Keyboard Controller 25 Keys, Worlde Panda MINI USB Midi Keyboard with Drum Pads, Beat Maker Machine Pad, Black : Everything Else
MIDI Controller Buying Guide
Midi Fighter
MIDI fader controller/soundboard USB C from The current stuff on Tindie
Amazon.com: Donner STARRYKEY MIDI Keyboard MIDI Controller, Full Size 25 keys, 7 Colors Lighting Effect, 8 Velocity-sensitive Backlit Pads with 24 Selectable Custom Tones, with MIDI out and Pedal interface : Everything Else
MIDI Controller Keyboard USB Synthesizer Beat Machine 8 Drum Pads Software Suite | eBay
Arturia - MIDI Controller - KeyStep
Samson — Graphite MD13
Novation Launchkey 49 [MK3] USB MIDI Controller AMS-LAUNCHKEY-49-MK3 - Best Buy