Center and surrounds for B&W 802d

Hi this is my first post on here so please bare with me if this isn't the right place to ask. 

I recently purchased a pair of B&W 802d's and now I'm starting to get the audiophile itch as I start seeing and researching the possibilities.  What would be some recommendations that I should consider for a center channel and surrounds?  Prices are all over the map for used speakers and I'm not totally sold on just outright purchasing brand new. 


Center channel and surrounds should be from same series of B&W as your 802d’s.