Any recommendations for soldering electronic circuit boards. I am wondering
if the lead free clear flux solder is better.

Here is some examples from the local Radio Shack

..05" ROSIN CORE SOLDER 64-6 $4.99
..05" Rosin Core Solder (60/40 Formula) 42.5g (1.5 oz.).

SILVER SOLDER 64-13 $5.99
Silver solder. High grade solder for surface mount devices. 62/36/2%
formula. 0.022". 42.5g (1.5 oz.).

HI-TECH SOLDER 64-15 $3.99
Hi-tech solder.63/37% formula. .050", 42.5g (1.5 oz.). Specifications:
·Melting Point is 183 degrees C


CLEAR FLUX SOLDER 64-18 $4.99
Crystal flux solder. Clear flux solder. 60/40% rosin core. .063", 56g (2
oz.). Great for projects and design work. Holds shape and dries smooth.
Provides better looking results, no discolourations.


LEAD-FREE SOLDER 64-27 $7.99
Lead-free solder. 97% tin/3% copper. For fine electronic soldering. 0.50".
56g (2 oz.).