I currently use Radio Shack 60/40 rosin core, 0.032" diameter solder that comes in 8 oz spools . It is $15 a spool and i do go through it fairly quick. Is the kester stuff better? I have used some chinese brand solder that was 60/40 rosin core and it was crap (bad flux?) compared to the radio shack brand solder.
The 0.064" solder shown above is too thick for board work. Probably would be fine under playfield.