Question about Ed McBain's "87th Precinct" series...

Anyone have a favorite book in Ed McBain's "87th Precinct" series? They're on sale for the Kindle right now and I was thinking of giving one of them a try. So, any suggestions for a good book in the series to start with (since I know from experience that the first book isn't necessarily the best).

Crossposted from my Livejournal