that solder has no-clean flux. what we like about kester 44 is the fact that it has a very active (ie, very corroside) RA rosin flux. chip quik might still make a good RA rosin core solder though. i'm pretty MG chem still does, and their rosin is top notch.
edit: note that the major difference between no-clean and rosin flux is that no-clean is _not_ very active. hence, you don't have to clean it off the board after you solder. this is quite if you're processing 1 MILLION PCBs per minute, but if you're soldering like one a week you want the rosin.