depends on what kind of atmosphere your looking for, any of the main kawartha lakes produce huge bass, tri-lakes and rice and seymour have had several 8lb buckets come from them, but also deal with more boats and the goon squads, lakes on the crow river system all produce nice sized bass, right from bancroft area down, paudash, chandos, round, belmont crow lakes all nice and not always as busy.
i ve taken my canoe into some backwoods smaller lakes and have caught 3-5lbers all day long, low fishin pressure and almost no harvest grow em big in the backwoods