I'd agree with that - the out of order story line always put me off in Use of Weapons. Seemed unnecessary. As for his best, I'd add Look to Windward to your list. That's a beautiful, moving book.
a remarkable number of books I've read recently are basically: a present day chapter, then a flashback chapter, eventually leading up to a tense moment in the present day that only makes sense once you have the flashback context.