too be quite honest i would guess the 10 pt at about 4-1/2 or better becuase of the location. i say this because im GUESSING that the available forage may not be as good as the midwest with crop fields abound. that however may not be true. i have no experience aging texas deer. given the choice of harvesting one or the other, both deer being of the same age of 3-1/2 or better i would shoot the eight and leave the ten a few more years to hopefully sire a few more bucks. at any rate they both appear to be nice deer.
"please join the N.R.A. as well as your state rifle association! these are critical times for ALL gun owners. Be informed, be active and stay vigilant"