The most used lube at our home is Sliquid H2O Ride
. It's a water based lubricant with only 4 ingredients, no glycerin, parabens, sugars, or things to make it have a "taste" warm, tingle, cool etc. We have found it totally nonirritating to our bodies everywhere. It lasts and lasts, even for anal, it tastes like nothing, has no smell and isn't sticky. Well, read the reviews (mine is the link on the name above) and you'll see what a wonderful lube it is.
Its by far our favorite lube. I buy it in the 8.5 ox bottle.