Roland FP-4 vs Roland LX-15

Roland FP-4Roland LX-15
Key action88 keys PHA alpha II keyboard88 keys (PHA III Ivory Feel Keyboard with Escapement)
Polyphony128128
Sounds / presets333347
Sound engine—Conforms to GM2/GS/XG Lite
Speakers14 W13200 W
USB audioNoNo
Weight15.3 kg91 kg
Released20072013
Release month1—
Statuscurrentlegacy
Keys8888

Which one should you buy?

Full spec sheets: Roland FP-4 · Roland LX-15. Rows with a highlighted background differ.