Sorry about your grandfather. I second the AB Maxx. Nice smoke for long drives, the larger size keeps the burn cool, the ash is firm and not flaky and I've not had significant burn problems.Really sorry about your grandfather.
I agree with SkinsFanLarry and suggest a churchill size cigar in something you like or a A or double corona size. Others I would suggest are:
Nub is 460 size
Illusione MJ12
Padilla 1968 Salomon
Brazilia Amazon
Alec Bradley Vice Press
Alec Bradley Maxx
Since your in Texas, you might want to try a Taboo Twist!