My mum had a Singer 401g and I learnt to sew on that, but it wasn't mine so it doesn't count! For my 21st I was given a Singer 163 Capri and sewed a lot of things on it over the years. Its good points were: all metal body and innards, very fast, traditional machine with straight, zigzag and stretch stitches. Bad points: horrible plastic insert around the free arm (why would they design it like that?), tension could be a bit iffy, no automatic buttonhole capability.
After its capacitor incident I bought a new Janome which took over as principal machine, then got the Singer fixed as back-up. When I bought my 'new' 401g, the Singer went on Gumtree and was sold to a lady who had learnt to sew on one exactly the same, which had belonged to her mother!