This is the second kind of silicone-based lubricant that I've tried, and comparing it with the other kind I've used this one is the superior of the two products.

WET not only has all the standard benefits of a silicone-based lube, silky, ultra-smooth, and a little bit goes a long way so it will definitely last you in the sense that you don't need to use much during sex, and the bottle will last you a while because you'll be using less per session. My fiancé and I bought the 4 ounce bottle of WET Platinum in March of 2011. ....We just now ran out in August of 2012. How's THAT for a good bang for your buck? Pun totally intended. Teehee.

Unlike the ID Millennium, WET Platinum's bottle design doesn't leak when turned sideways so you can store it a drawer and it won't leak all over your stuff. Just make sure that it snaps closed. You'll hear a snapping sound when you push the cap down so you'll know it's sealed. I also feel that it's a little bit more water-soluble than the ID Millennium, so it's a bit easier to get out of sheets if it drips. Silicone-based lubricants are also clear, dye-free so you don't have to worry very much about stains, which is always a positive thing. But, like most silicone-based lubes, this will also have no scent or flavors so, if you want flavored lube this isn't.

If you are choosing between this or ID's Millennium both are a great choice but if you're worried about spilling and storage go with the WET Platinum, that way you can hide it anywhere you like with little to no worries about spillage, and if you're also looking to get a really, really great deal on lube this is a great way to go. It pays for itself pretty quickly with how long it will actually last you.

This is still my favorite silicone-based lubricant. Even though my fiance and I have bought another lube (flavored) since our bottle of this ran out, we still plan on buying another bottle to keep on hand when we don't want to use the flavored kind. It's nice to have it as backup.