Most of my toys are silicone, and patch-testing's a hassle I normally don't bother with, so water-based it is. I do have a bottle of silicone lube to use with TPR and glass, though, when I play in the shower.
Water based, because 80% of my dildos are silicone. I was recently recommended Maximus water based lube, by an EF friend and am OVER THE MOON about it. lol I've never really been drawn to silicone lube. Maybe I'll use it more as I get more glass toys.