Quality Items worth it?

Currently at a stage in life where I’ve got the income to buy more long term items, and just looking for where people have found it useful to spend the little bit extra on something quality and where you can get away with saving.

For example - Vacuum Cleaner - worth spending a bit more or actually fine with a cheaper off brand option?

Figure this has something to do with personal finance, as they’re things I’d consider investments (not in terms of selling, but in terms of minimising cost or time spent doing bits over lifetime)