This is what I'm talking about today: http://www.amazon.com/Primo-340W-PRIMO-EuroBath-Pearl/dp/B000056OV0/ref=sr_1_1?ie=UTF8&s=baby-products&qid=1235007226&sr=1-1
The Eurobath is the best baby tub ever! Okay, so it's the only one I've ever tried but L used it for two-and-a-half years and now T is using it, so I think it has proven itself.
It has two sides. The infant side keeps your baby at a nice angle--perfect for bathing and rinsing and she doesn't slide down. I like to keep a wet towel under baby for extra comfort, warmth and traction, and T stays in place. Don't ever leave baby unattended, but you can let go and soap up your washcloth without baby sliding into the water.
The second side is for kids who can sit up, this was the side L used till he was 2-and-a-half (I know the instructions say 24 months, I also added water beyond the max fill line--whatever, it worked for me). I felt he was safer and less likely to slide around in this than the real bathtub, plus it uses much less water and corrals his bath toys.
There's a little blue drain that I think is really dumb, but maybe you'd find helpful. I, however, just turn the tub over to dump the water. (I suppose I should mention that I use the Eurotub inside our regular tub, you could use it anywhere; when L was a newborn, we bathed him in the tub on top of our kitchen table, I don't remember why.)
Finally, the plastic is extremely easy to clean (very important for this lazy mom). So if you're in the market for a baby tub, or know someone who is, I give the Eurobath two thumbs up. For more things people love, visit http://thediaperdiaries.net/