Possibly interesting PT2399 alternative for chorus.

[Scruffie]

Came across this chip, while it's out of production there's a few on ebay and possibly some hidden in the woodwork out there.

http://pdf.datasheetcatalog.com/datasheet/MitsubishiElectricCorporation/mXyzvwyq.pdf

Seemed like it might make a decent digital chorus chip, spec'd to go down to 15mS of delay time compared to the 30mS of the PT2399 and includes auto reset on power on to avoid that latch up issue.