I have the Inova T3 and I had the Streamlight 2L3W lights.
T3 has better overall build than the 2L3W, and it would therefore probably handle drops and knocks better.
2L3W has slightly greater throw (on high output) than the T3.
T3 has slightly more runtime than the 2L3W (on high output).
2L3W has low output mode as well, which the T3 doesn't have.
Size and weight are similar between these two lights, although the 2L3W may be slightly longer.
With only one button, the 2L3W requires extra button presses to cycle through the output settings (high, low, then off).
Your preferences should help decide which light you want (or maybe buy both lights?).
Hope this helps!