Korg KingKORG vs Korg opsix mk II

Korg KingKORGKorg opsix mk II
Key action61 notes / Semi-Weighted Keyboard (Velocity sensitive)37 keys (velocity and release-velocity sensitive)
Aftertouch—no
Polyphony2464
Sounds / presets300500
Sound engine—Altered FM sound generator
Speakers—None (line out only)
BluetoothNoNo
USB audioNoNo
Weight7 kg2.9 kg
Dimensions (W×D×H)—565 × 338 × 90 mm
Battery power—no
Released2013—
Release month1—
USB to hostyes (USB Type B, External Connection: MIDI IN/OUT, USB Type B)—
Statuscurrentcurrent
Keys6137
Oscillators3 Oscillators (choose from analog, noise, DWGS, PCM, and MIC IN types), 127 types—
Filters1 Filter (LPF/HPF/BPF), 18 types—

Which one should you buy?

Full spec sheets: Korg KingKORG · Korg opsix mk II. Rows with a highlighted background differ.