Here we all go again.
I use LiquiVac. Larry doesn't. Some do. Some don't.
If you choose to change your oil by using a suction device, I would recommend it. I put up with the tube collapse and slow drain and change my oil hot. No dire consequences yet to the tube.
The real thing to remember is change your oil and filter and do it often. If having the LiquiVac makes that possible for you where pulling the drain plug will not, buy the LiquiVac. It works well...
1998 C230 "Black Betty"