"It also sucks out more oil than draing it through the plug. "
Can you please explain how that's possible?
You're saying that after you use your topsider that if you crawled underneath and removed the drain plug, nothing would come out - not a drop?
I disagree. I drain my oil using the drain plug. It gives me a good opportunity to look around for worn items, oil leaks, and other potential hazards.
Experience is something you don't get until just after you need it.