The slant at the bridge is just a half measure. The bridge may be canted to change the scale length a bit, but the frets are still parallel on an untempered fretboard. Many notes on the neck are still pretty out of tune, notably in lower positions. I've never played a fanned fret bass, but I have wanted to for years ever since I first heard of Dingwall. Ibanez currently is selling a 5 and 6 string model and ESP introduced what will no doubt be a more-budget friendly version. ...and piano-like tone refers to equal tone across all the strings, not a snarling upper midrange. If "piano like" is too prejudicial, think "harp like."