It's only horrid when the flux it comes with is crap. Most people try the cheapest garbage they can find on Amazon, and that's the problem. I use Chipquik SAC3

It's only horrid when the flux it comes with is crap. Most people try the cheapest garbage they can find on Amazon, and that's the problem. I use Chipquik SAC305 with water-washable no-clean flux core and I actually prefer working with it over Sn63Pb37.