oh, I would absolutely dump Leif before Saharah. But I would dump them both in a heartbeat at this point for consistent Redd visits.Yeah, but Leif's offerings are much less and you can visit him across other players' islands too. If you have online, you can have all the shrubs and flower seeds in all variations within a week at most.
Saharah has at least like a hundred or so rugs and like 30-40 wallpapers and floorings each. Leif has 24 types of flowers (which he shares with the store and is not subtracting native or sister flowers for the count) and 11 types of shrubs.