Having experience with production wiring, I, too prefer soldered connections. Please keep in mind that most solders are not the best conductors and have higher DC resistance than copper wire. It’s important to first create a good mechanical connection by a good twist before soldering. Both soldered and crimped joint can suffer from corrosion so as others have said seal the joint with good quality shrink tubing. One simple technique I use is to stagger the location of the splices along the linear run so you don’t end up with a big lump of splices in one spot.