Plain 63/37 Rosin Core solder is reasonably priced and melts at 361F (183C). 63/37 solder is also an eutectic alloy and transitions from solid to liquid and liquid to solid within a degree as well.
.062" is really large solder, I use .031" for general soldering and .020" for circuit board work.
IMO, you want to avoid the lead-free solder like the plague for the kind of work we do. I had several pounds of the stuff, and it's a major PITA to work with, not to mention it has a higher melting temperature.
This page describes it best.
