Better fast TM Option
93% Arcanine, Bite/Fire Blast
93% Charizard, Ember/Flamethrower
87% Flareon, Ember/Flamethrower
89% Omastar, Mud Shot/Hydro Pump
98% Ursaring, Metal Claw/Close Combat
91% Victreebel, Acid/Solar Beam
I realize that these are some pretty unorthodox Pokemon to use a TM on. I have been getting pretty lucky lately and don't really have anything else to use it. I will also add that I have every worthwhile counter with ideal movesets and am really just looking for a new fun Pokemon to use. These are all high levels already and don't necessarily need anymore powering up.
Answers
STAB isn't as important as it used to be. Type countering is the dominant consideration. Having fighting moves on a normal type is useful against Snorlax and Blissey to avoid being weak to psychic and fairy. He could also pitch in on Ttar raids.
Chrizard is definitely second. The rest are too common and won't show enough improvement to justify a TM.