for a vacuum, definitely NOT a VAX. I bought a Henry, which I had years ago when I first lived in the UK, and I still love. Good all rounder,and now you can get a model with a beater bar. Far cheaper than a Dyson and many other models.
Tefal & Kenwood appliances are pretty decent. Coffee makers - I have a DeLonghi...cheap and cheerful, but difficult to fill. Toasters are a pain; many don't actually accept a normal sized piece of bread. The best one we found was Morrison's own brand, and cheaper than the 'name brands'.
Samsung makes a great TV, but so does LG, Panasonic and many others. I personally don't think there's a lot to differentiate between brands once you decide what features you want.