Paaji, for simple water filter nothing would beat pure-it small model that retails for 1K. If you something fancy, there are better ones available, but I have limited experience with those. So cant suggest any particular model.
For washing machines, I have been using IFB Front loader since last 10 years, and recently got one from Samsung Top loadng model. I would recommend IFB Executive elite if budget is around 20k, but for budget around 14K, Samsung top loader is equally effective. But check about IFB service is your area first. Their products are good, but service is inconsistent across various parts of India.