My two cents...
IMO, brood bars (10 or 12) should be 1-1/4 wide and located nearest the entrance, honey bars should be wider at 1-5/8 to 1-3/4 and located furthest away from the entrance, presuming that the entrance is on the long side and biased to one end.http://i865.photobucket.com/albums/ab218/Sunchaser01/DSCN0721.jpg
Mine is just over a year old and I pinched a couple of bars about a month ago. One bar was all honey and one had maybe 20 drone cells that I cut and discarded. There were 3 or 4 more bars with honey visible, but I didn't want to be greedy and harvest more than I could use.