Hi Gwk,
There are loads of good boards out there and width and length are important, but so also is weight, construction, bottom shape, rocker, fins, footpads and straps, rails etc. Even more importantly is the water conditions you will be riding in frequently and the style you wish to ride. If you ride surf, you'll need a softer rail and more rocker, if you ride flat water a hard rail and a bit of tail flex but a flatter rocker. A double conmcave seems to be good in heavy chop
No one can tell you what the best board is, because the only person who can determine this is you. My advice is to demo boards until you find one you like the feel of and then buy it. If you're lucky it won't be too expensive ;-)
You should include your state in your profile so people in the local can tell you what boards are available to you in your area.
Good winds,