Sealants are much more durable than waxes (3-4 months of protection compared to 3-4 weeks with waxes) and very easy to work with so most detailers prefer a sealant, especially on daily drivers. They look great on all colors and can be applied by hand or with a buffer. A sealant provides more than enough protection and an outstanding shine so you can certainly stop there, however adding a wax on top can really add another layer of gloss, depth and protection to take your detail to the next level.
If you are looking for the deepest, wettest look out there we would highly recommend a coating. Semi-permanent coatings take more effort and time to apply, but the results are worth it. Coatings will provide an amazing level of gloss and shine, while protecting your paint for up to 24 months! You can also top the coating with any wax or sealant to add more depth, gloss, and protection to the paint.
For more information on all of these great protection options check out our Ask-A-Pro Blog and Auto Detailing Guide. In particular, you might enjoy The Case Against series of posts that discuss the pros and cons of sealants, waxes, and coatings.