I have experiance with TLF and the VIA.
I like the ViaAqua better than the TLF because it's better built and includes a pump for the same price as the TLF.
One of our sponsor carries the TLF
Champion Lighting & Supply :: Phosphate Control :: TLF Phosban 150gm
Champion Lighting & Supply :: Phosphate Control :: PhosBan Reactor 150