I have been sewing for 35+ years and I am happy with this machine. I chose this machine because I do not like to use "drop-in bobbins" due to the fact that you cannot adjust the bobbin tension. Having the bobbin in the removeable, and therefore adjustable, case is a real bonus to me. It is getting difficult to find machines with this feature. It did take a little tweaking to get the buttonhloe feature to be exactly the way I like it, yet it was very rewarding to be able to fine tune it. Thank you for offering this product.