Firm, good looking and tasteless. You hit the nail on the head.
These tomatoes have no taste because they have no smell.
Grocery store hybrids are engineered to withstand rough handling by customer, picking equipment, transportation, etc, etc.
Grocery store hybrids have a high flesh to juice ratio.
Heirloom tomatoes have a high juice to flesh ratio.
Drop and heirloom and you gotta eat it as it will turn to mush.
Grocery store hybrids are not the same as your typical homegrown variety such as your Better Boys.
I, too, am a hobby tomato grower.
During a typical growing season I plant some 50 heirlooms and 50 Better Boy hybrids.
The hybrids carry me into the fall season as most, not all, but most heirlooms are dead
from the bacteria in the soil before the end of the season.
I pick up tomatoes in the store and smell them. Usually there is no smell. Tomatoes should smell like tomatoes. Just grow your own.