Be careful using Millennium as I believe it is an oil based lube and will break condoms and will ruin some toys. Oil based lubes are wonderful for skin-on-skin sex, though, so if you're OK in the bareback/vajay to vajay department then I bet you'll love it!
Original ID glide is my water-based lube of choice, then ID cream (oil based and thick like vaseline) for some activities (especially for hand-to-gland contact). Pretty much any water-based gets a bit sticky after a while and needs a bit of natural lubricant (from a pooosay) or spit/water to rejuvenate it. Also many water-based lubes have a form of sugar in them, which is NOT healthy for a vajay so make sure not to overuse it, and clean yourself thoroughly after use.
Sample sizes of ID glide are normally a tiny little pouch that would last one use. Decide if your time/energy/effort of signing up on a website is worth that, or just buy a few dollar bottle on Amazon.