Here are some things to consider when purchasing a sewing machine. What is it that you do all the time. If it's just stright sewing and maybe a zigzag now and then, then get a simple machine. An electronic machine is much easier to fix if needed than a computerised one.
I have this work horse singer, one of the old ones that sews like a dream but just stright stitch and it's fast. I use that one a lot. I just miss the needle down position.
The janome is computerised and has lots of stitches and I have that just in case. I hardly every use most of the stitches or the embroidery part. It's a good ten years old and work like new.
Why would machine parts break? That puzzeles me. Unless something is sewed that should not be sewed on that machine. The old machines were all made steel parts, maybe the newer ones are plastic? I haven't opened the Janome to find out lol, it hasn't needed an opening yet lol....I tend to think that the newer stuff doesn't last as long as the old stuff becuase they want you to buy more....