500 vs. 401
I've had several 401's..I think 3 that I've sold and I'm down to one now. I've enjoyed sewing on all of them. I picked up a 500 a few weeks ago and pretty much assumed I'd like it the same as I do the 401, but I was wrong. I much prefer the 500 series. I'm not sure if it's the extra upper tension guide that's built into this model that helps create a better stitch quality? But, I find I prefer the 500 over the 401. Interesting...