Paul

I concur. Despite the few odd blips, I've saved money on most days.
Since install day I have saved £63 over the standard rate (and £48 over the fixed rates).

I guess for the pedantic, the meter itself doesnt save anything as such, its the smart tariffs you can use with it (on Octopus) that [can] save you money.

Once Agile settles down again (hopefully in the spring) I'll be looking at switching back to it.
Also, for those interested in their usage, you can see what you are using, and when (esp with the Octopus Mini, which I love).