I've got a Panamax MAX5100 that I've used for a number of years now and have been quite happy with. It includes support for my cable connection, which is a nice touch. The Brick Wall units actually appeal to me somewhat more, though, and I've seriously considered replacing or supplementing my Panamax with a Brick Wall (the 5100's old enough now that the MOV's have probably degraded).

If you get a Panamax, be sure to buy from a certified dealer to make sure it comes with the manufacturer's warranty - otherwise, they won't pay to replace equipment that gets damaged while protected by the 5100 if something unfortunate were to happen.