Mitey Vac makes a good unit. It's available at Sears. Get the 8L version, about $80.

I use it a lot. I do fleet maintenance and I have several remote locations. I can change the oil and filters in my units with just a couple of small spots of oil left on the ground. Easy to clean and the old oil is in a sealed container ready to be taken to any store which accepts old oil. Much easier and neater than draining the 10qts in a pan, replacing the drain plug every 4th or 5th time (I'm a little pedantic at times), messing with trying to drain the oil into a sealable container and then having to clean and store the drain pan.

The first one I did I pulled the drain plug just to see how well it did. After 2 or 3 minutes I got maybe three small drops of oil from the pan.