I used wundaweb and an iron to hem things these days. If you are looking to machine hem trousers you will need one with a removable base for this purpose ( e.g. threadistry.com/blog/free-arm-sewing-machine) and a zigzag or hemming option.
I do have a 40 year old Singer. I thought to upgrade, but my lovely Singer repair man serviced my machine, sold me a new pedal, and told me that a lot of the newer machines have plastic parts and to stick with mine. He said that unless I wanted fancy stuff it was better than newer. He had a range of Husqvarnas which he said were the best of he new ones.
I bought 50 white wire coathangers for 9.99...lifechanger!!



