The poster does seem to get here often , I asked some of these these questions haven't heard back yet , so wanted to ask others .
Have not used paste , except playing with old stuff that came in box of stuff , so not familiar with options .
With a short Google check , it was hard to find leaded paste which made it harder to see what varieties it comes in , mostly alloy mixes , for solder wire I prefer 63/37 for the shortest transition time from liquid to solid .
Since the seller is asking for offers , and no info ?