I decided to do some painting in the bathroom, the baseboard and window sill to be exact. So I made a trip to Home Depot to pick up some paint. Home Depot no longer sells oil-based paints, the saleslady told me it has to do with the chemicals in it. So I bought water-based paint, and since I didn't know if the paint already on the sill and baseboard was oil-based or water-based, the saleslady advised me to get primer to put on the wood first. She told me if you put water-based paint on top of oil-based paint, when it dries it will just peel right off. Well, we don't want that. So I purchased one quart of Kilz 2 Latex Interior/Exterior Water-Based Primer, which also acts as a sealer and stainblocker.
This primer does a good job of getting the woodwork ready for the enamel paint which will go over it. It dries quickly, you are able to recoat in one hour, though I waited until the following day. It does a decent job of covering marks and stains, and does not have a bad smell at all. For the category of washability, I put a one because primer is a base coat and isn't really meant to be washed.
This primer is for interior and exterior jobs, though it is not recommended for floors. I did not have a hard time applying this paint at all, and I definitely intend to use it again for other projects I will be doing around the house.
Update On Dec 10, 2009: I completely forgot to mention how easy this primer is to wash out of your paintbrush. I just had to run it under water and it came right out.