You also want a detergent that keeps colors from running, like when you put a red shirt in with the white wash. So Consumer Reports tested for that also. They washed white swatches with red swatches. With the Tide tablets the white swatches turned bright pink. A final consideration is cost.
Tablets are expensive.
So are liquids. If price is important to you, Consumer Reports says consider powder laundry detergents. They cost a lot less. Consumer Reports' most recent test of laundry detergents turned up several good powders, including Tide with Bleach and Cheer with Bleach. Both are inexpensive and excellent at getting clothes clean.