I'd say those Epi Japan LP juniors are well worth £400, though the pickup ain't nowt to write home about - just been replacing mine with a BKP this afternoon. It's something Tim rustled up for me and I'm not sure how it sits in the BKP P90 range. Mine is the classic 10,000-turn P90 wind but with an A4 magnet. DC resistence around 7.8k
I upgraded the electrics to CTS/Switchcraft while I was in there and I'm stringing it up tomorrow = can't wait to hear how it sounds compared to the overwound Fralin A5 P90 that was in there before.