to solder or not to solder

[Monkey]

hi i just got my new wanderer 8XL motor and of course its pre wired with 5.5mm connectors what i want to now is should i get some of these for the controller or just cut them of and solder it straight to the controller like i the i did with my 9L

ive allways thought and been told its better to solder and kee the resistance down but just checking befor i get the wire cutters out