I just do the 'just shuffle and get it over with' shuffle (meaning just with my hands, or 'the overhand shuffle' as they call it, and usually for a very short time, unless I think it needs to be a little longer)...
Funny, I really thought everyone did it that way.
Riffle shuffle would be awesome and very impressive when reading for other people... (hey, it would be impressive to myself too!), but:
a) I can't do that (unless I'd teach myself) and
b) I can't do that with the decks I use (too sturdy)!