+2 on the 63-37 solder and liquid flux, went from slow heating, over heated stiff wire, cold grey blobs to instant flow and shine, only took me 20 years to finally understand and master good soldering, if i had youtube back in the day... it would of taken an hour!

another plus is you dont have to crank the iron to max, and overheat all your components...once that flux sizzles your good to tin

cheap 60w irons work great right out the package, but no matter how well you clean and tin the iron, the cheap tips erode fast and near impossible to find replacements, which is usually the number 1 reason for bad heat transfer .... bought a hakko a few years ago and im still using the chisel tip it came with, good practice with any iron is to feed it fresh solder, clean it off (i like the brass scrubber mesh thing vs wet sponge) than re-feed it, and store the iron with a blob on it, just clean and tin before you turn it off, you kinda get into this ocd habit of wiping and tinning the iron

search for videos on how to solder circuit boards, they really give good advice vs the r/c specific stuff