In my experience, the "frangible" ammo in 9mm does not break up when impacting a soft target be it flesh, wall board or body armor. The Speer RHT remains intact after impacting our shredded rubber backstop. It will act much like FMJ in a human target unless it hits a substantial bone.
You must consider any expected intermediate barriers when chosing your bullet. If you are in a cold climate where any intruder would likely be wearing heavy clothing, go heavier. The 147 Gold Dot is not subsonic and works well. The 124+P Gold Dot is a reasonable alternative. In a warm climate where the anticipated intruder would likely be wearing nothing heavier than a t-shirt and jeans, the 115 JHP would be sufficient (Probably).
In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball