Well this is a nice interesting topic....
Heres my quick view on it.
I used larry's method. I liked it, it worked well.
I have used a topsider. Again I like it and it worked well. And I have used mine hot. I got it from www.boatus.com
for like $30 or something.
My car has a belly pan, and has to be removed to change the oil.
To me thats an inconvienience to have to pull the pan and get extra greasy.
The topsider works for me and is more of a convinience for me to use it. otherwise I'd use Larry's Method.