I've tried Liquid Silk before and loved it. Can't say anything about the taste though, as I avoid getting any lubes in my mouth at all costs.
I will caution you that Liquid Silk has some silicone ingredients in it, even though the front of the label says "water based". Use on your silicone toys at your own risk.
You can read more about it here
, and I believe I've seen some other forum posts about the topic as well.