Is Manuka honey preferable to use in general, or are there more beneficial forms of honey we can utilize?

As a general use source of honey, this is an excellent choice given its wide availability and growing awareness and knowledge base for its particular advantages. This, of course, does not speak to particular applications for which other types of honey might be more advantageous, but it is not possible given the lack of a detailed encyclopedic compendium of honey types and attributes to know a better starting point, usually.