I started off using regular lead solder because that's what I had. Later I switched to Lead-free solder on the suggestion of a musician friend of mine who got me into pedal building. It took a bit of getting used to with regards to melting point, flow, and the tendency for good lead-free solder joints to appear dull, which is not a great sign when using lead solder. It also smells pretty foul when melted and the vapors are toxic, if I recall.
On the other hand, lead is nasty stuff, poison-wise, and seems to really foul up my solder tips, whereas the lead-free stuff just take a quick wipe on a wet sponge and it's all nice and clean.
Well, I finally used up my spool of lead-free solder and was going to order more. I figured I'd get some opinions since I've been really impressed with the level of knowledge here.
Do most of you use lead or lead-free solder and what are you experiences in favor or against?