If cost isn't a deciding factor, I would woleheartedly recommend the LGW. It can do so much more than the Keeley TS9. It is much less compressed, but can be made to sound similar by adding a compressor. The gain range on the LGW is very wide, as is the tonal range. It can go from clean to distortion territory. It can also be set bright and biting or very dark and thick.
It's an awesome pedal and really has many layers of tone you can discover by spending time with it. It's great out of the box, but there really are a lot of different tones in there, especially if you add a great compressor, like the PGC, to the chain.