Hi. I have 2 brother machinies. One is a regular machine with a needle threader and you can oil and clean it yourself.
I wanted a computerized machine. It is great for many things like stitched other than zig zag and straitht stitch.
I had it for less than a year and had to have it cleaned which cost almost as much as the machine cost in the first place. The instructions don't include any maintenance other than cleaning the dust out. So I don't use it as often anymore. And the needle threader is difficult to use. Lowell ;)