Some time ago I did some “tests” with many lenses! I documented it on this thread: Essays with Triple TIR optics and XP-G2 Leds [PIC HEAVY!!!] .
About the favourite TIRs, definitely the pebbled (“hive”) and the frosted ones.
Most of the “clear” ones (be them narrow or larger hotspot) do not make my day, as there are always lots of artifacts, depending on: the type of led (domed or dedomed, 3535/4040/5050, ), the use of the lens plastic holder (or not), the use of gasket around the led (or not).