I started building my keezer with the Kenmore 18702. It fits 6 ball locks but its super tight -- there is no wiggle room. I may have to remove some plastic molding so the kegs can more easily side in an out.
Fits 4 perfectly without collar. Fits 5 with about 8.5" collar.
I used about 4-5 pounds for my 5 gal batch. Racked onto strawberries in secondary for about one week. Racked off strawberries and let sit for another week before bottling.
Aroma is incredible but the taste isn't over powering like a juice. I am very happy with the results.