Mark Levinson suggestion please

Always interested in the brand, however, never had the chance to try it. I am putting together a system for my friend which include a set of B&W N802 speakers, thinking about trying Mark Levinson amp(s) to go with them, I would appreciate suggestion as to the most cost effective "used" Levinson to get---hopefully under $4000, but will consider going over. Also, if home theater is a consideration, for the same budget, should I consider other brands?