Granted I have never had a long-haired cat but I don't really understand the point of "hairball" foods, especially kibbles. Products like malt paste should work better logically -- it has more moisture and the things they add to hairball foods also exist in these pastes.
I would go with the food for sensitive digestion both for wet and dry - you will probably need to try different foods and brands to find what works for your cat. And leave the hairball to a good malt paste.
I would go with the food for sensitive digestion both for wet and dry - you will probably need to try different foods and brands to find what works for your cat. And leave the hairball to a good malt paste.