I've tried numerous different methods. I started crimping because my soldering skills are rubbish but it turned out my crimping skills were just as bad and I had numerous problems.
I started soldering instead, which was sometimes OK but I still had issues because I was just so bad at it, making big, lumpy connections.
I then realised that I had being using my crimp tool incorrectly so I went back to crimping BUT I also soldered as well. I bought a kit full of these types of connectors:
So crimp in 2 places, once on the insulation, then on the bare end and then a blob of solder (I'm good at them) where the bare wire is visible.
If you want larger plugs, I strongly recommend these DT plugs - work really well and very secure.