The answer to the best option is clear, it needs to be something stable so it has to be supported by dental implants, not just tissue. The options in order of simple to more complex are below. The best option for you needs to be determined by a dental professional.
1) Removable denture - supported by tissue only and really is the most basic option, not very stable, covers the roof of your mouth, causes mouth soars and looses stability over time. Only advantage is that its the entry level model least expensive.
2) Locator over-denture - a denture that snaps into implants, its still resting on tissue but it has the advantage of having stability provided by the presence of implants. This option usually requires at least 4 well distributed implants for support.
3) Bar over-denture - same as above but instead of the implants standing individually the implants are splinted together by a bar, this means less tissue contact is needed and we can often remove the palate plastic that exists in a normal denture.
4) Implant retained bridges - these are the cadillac solutions, they employ 4-8 or more implants distributed in the jaw bone and have a fixed bridge that is either screwed or cemented in place. Since there is no tissue support this is the most comfortable option, it is also the most costly. Recent advances in technology enable the placement of 4-6 implants and having the teeth inserted the same day.. this is often called all-on-4 dental implants.
Have a good consult see what the condition of the bone in your mouth is and what option best suits you.
Hope this helps.