i use rags (just cut up old clothing/towels) over paper towels because rags are cheaper in the long run and don't waste trees.
all the shops i know use rags too.
Yeah, I have my collection of rags too,
but I use the paper towels for wiping up when I do detail work.
Don't want to spread oils/lubes from rags onto the finish of the frame.
Plus, great for quick hand clean-up.