I've tried both shafts for a fair amount of time. They're both good shafts but they have different feels. The dimensions and tapers of both shafts are similar.
Here are my impressions:
The OB Classic is a heavier, firmer shaft. It weighs in around 3.9 - 4 ounces. There is a definite meaty feeling to the shaft. It plays much like a low squirt conventional shaft, firm, not much flex to it, plenty stiff. The laminations are quite visible. It is not a lively shaft, but it is highly predictable. There is no feeling of light weight toward the tip side.
The Tiger Ultra LD is lighter - weighing in at 3.6 - 3.7 ounces. It has almost no visible laminations and is definitely high grade maple. It has a more lively feeling and slightly more flex than the OB Classic. It is also reasonably low squirt, but has a lighter feeling towarde the tip side, kind of like a Predator 314, but more solid.
If someone plays with a power game, they will probably favor the Classic. If they play with more spin and finesse, they will probably favor the Tiger.
I'm playing with the Tiger Pro X now, with the 11.75 mm tip - I'm really glad I made the switch to this sort of shaft, but it was not easy - it took several months to fully adapt. Seems like I can do a lot more with the smaller tip.
Chris
Ps. That used to be Derek Disco's avatar?