This question comes down to personal preference. However, there is a simple formula that will provide you with a starting point. Measure the 'viewing distance (in inches) & divide it bt 2. This will give you the recommended TV size for your room. Example: Your sofa is 330cm away from your TV. We convert 330cm into inches = 130 inches. We then divide 130/2 = 65 inches. The screen size you should be looking at buying is a 65 inch TV. This is a good time to point out we also offer finance on TVs across a wide range & sizes.