Scott, in my warped view of the universe all the mechanical oil removal pumps are junk. Electric ones, drill powered ones, all junk.
We bought one of the vacuum-bottle ones and I love it. Pump up a vacuum in the cannister, stick the hose in the oil dipstick tube, open the valve and
s l u r p
it very slowly but surely all comes up.
The fly in the ointment is that you now have about three feet of oily curly plastic hose that wants to whip about and scatter oil all over you cabin, so you wipe it down with paper towels as you remove it, and store it in double plastic garbage bags because there's always some oil mess waiting to break out.
But the damned things work wonderfully.