What happens next in this paragraph?

How to buy a sofa bed 
The first thing to determine is how you're going to use it. 
Most manufacturers emphasize either sitting comfort or sleeping comfort, but very few consider both. So it's important to think about whether you want it primarily for use as a sofa or a bed.
Select from:
(i) If you do, use either/or both, but be aware that you may opt to reduce the amount of cushions you're using. Cats can sleep on virtually any sofa bed or mattress, and this will not matter much either way..
(ii) Your sofa will most likely benefit from lying on it though, so don't worry about this. Leaning back in a cross-legged position will usually have the same advantage of increased comfort, because you'll be sleeping anyway..
(iii) A sofa bed is always a compromise; it is never the best sofa or the best bed available. Have an idea of what you're willing to pay before you go shopping..
(iv) You might either decide to purchase it for one, or perhaps use it for another. It can also be fitted over a sofa for a very low cost..
(iii)