the TL is very dfiferent than the SL, both in speed, and flight characteristics.
the Tracker is quite a bit more overstable than a TL.
in terms of speed, the TL is slow, the tracker is medium, the sl is fast. the roadrunner sits between the tracker and sl.
the old SE/CE TL's were a lot closer to the tracker, but the current ones are a lot less stable in both star and pro plastic.
the tracker is more versatile than the current TL.