I throw Teebird-L's like none other and they are my absolute favorite. I have a 171g CFR Glow that is more overstable and I throw it at about 75% power with a slight bit of hyzer and it flips up flat, goes forever, and then has a predictable fade at the end.
I also have two Star TLs at 171 and 172 and these are great as well. (I tried a Star Teebird, but wayyy too overstable). These are really nice S curve discs when thrown with some power, but I find that in the woods I can throw them at 70% and they'll fly dead straight with very, very little fade. If you throw them low enough, they will skip a bit straight and not fade at all. I like Teebirds, but for a fairway driver they were a little too overstable for me and the TL is a great substitute (or beat up a DX Teebird and it will essentially be the same thing). For open fields, the Star TLs work good, too, just thrown with some hyzer. They will flip up and give a long S-curve with some pretty damn good distance. I reserve the huge distance open field shots for my Wraith, but if a hole is in the 350-375 range, I'll pull out the TL.
Pro Teebird-Ls are less stable than either Star or CFR and I find them best for long anhyzers, really tight woods where you can throw at 50% and they'll go straight, and for rolling when they get beat up. For a fairway driver, I think TLs are the best combination of straight flight and distance. Not recommend for headwinds however. They fly well in tailwinds though.
I bought a Pro TL this weekend.
This is the type of disc I will be gravitating towards. The TL is much "easier" to throw for me, and appears to be much more flexible. It is good lower speed shots or you can just crank it. I can throw this disc "flat" as apposed to need to use the anheyser snap that I need to throw the Wraith, Orc, CE Teebird, Eagle, Star Beast, etc. I think the TL is a more "realistic" design for less than Pro level players.
The TL I throw more like a super fast Roc. Just throw with a flat release, add I little heyser into the wind. The harder you throw it, add a little more heyser. This is more "old school" for me, and makes more sense.
If you look at the wing of the TL, you will see more of a symmetrical airfoil. This is similar to the new Beast (which I like BTW). I think these style disc wings "behave" much better, and more linear, and more "old school". Like a Roc, for example.
If you throw a ROC, you can throw it flat, and it will fly flat, and die just a tick to the left at the end. If you throw a Roc into the wind, you will need some heyser to compensate for the added relative air speed of the disc. If you crank a Roc, you would heyser flip it a bit. This was how "old school" discs worked. for anything less than very windy conditions, this is easily managed.
Long story short, I like the TL, a lot. I hope my newest 163 CE Beast will be close the flight of the TL, the 168 Star Beast is still too overstable for anything less than a very hard level snap.
If I had to throw every driver I had away today, and keep ONLY one . It would be the TL.