B tag is for the rifle hunters, A tag is for Archery and Muzzy Hunters in the Panhandle.
B tag gets a short archery season and then a long rifle season. A tag gets to hunt archery all September, A rifle season at the end of October after the B taggers, a Muzzy season in November, and then a later archery season in December.
A tag is really nice because we don't have to be around for the Zoo that is the B tag season. Although I heard talk this year that they want to give B taggers a spike only Muzzy season at the beginning of October. I hope they don't because that will effectively ruin the archery hunt. Those dipsh*t B tag hunters always show up weeks in advance to get a camp spot and wont leave till the season is over. If they do this, they will show up in August and wont leave till October.
Rant over. Get an A tag if you want to be in the woods as much as possible and have less of a crowd. Lots of elk, start scouting and you will find a bull this year, I haven't failed to shoot an elk in the Panhandle since I started hunting 4 years ago. Its a great meat tag and there are some nice bulls.