Since I got my 301 2 1/2 years ago, I have only sewn on my 403 when I tried it out. I really hated working with my Brother than I bought after my electronic Singer died for the third time. I felt bad about not using it, but I hated that everything was so much work - the bobbin had to be rest several times, the thread would break, etc.
My son moved into his own apartment recently and asked for a sewing machine. My DH hates how many 'useless' machines around - so he asked how many he wanted. My son said that he really didn't want an old one just a basic machine. So the Brother went home with him!! And it is the perfect machine for him - when he fixes his work pants or hems new pants or whatever.
When I stared sewing 45 years ago, I always wanted the latest, newest thing. I can remember when I bought my first electronic Singer, pushing aside my earlier mechanical Singer. Now I don't want anything that is younger than me!!!!