Best washable children's paints

[zebedeethezebra]

Recommendations please. Not impressed with the Tesco stuff, and I've heard that the Crayola doesn't actually wash off.

I've worked in nurseries and as a nanny plus have an 8yr old myself. I've found the best paints to be early learning centre and they're quite reasonably priced. I would be careful with black though as it is always a bugger to get off which ever brand you use.