I am a big fan of the Loctite brand - their sealant works, in fact, sometimes it works too well and the cap gets stuck and I can't even open the thing. In fairness, though, this is great. Worked really well on bonding tile, which was my experience. Most importantly, it is a great value above all. You can still reposition the tile before it truly sticks, which is helpful as well for ensuring perfect placement.