Hi,
I've been running Devolo 200AV units for a while and recently 
asked abut their 500AV+ units. I bought a pair of 500AVs and they 
are noticably faster and use less electricity apparently and even 
have a power pass-through.
They didn't talk to the 200AV units I alredy had which was a pain, 
but a firmware update (Windows only BTW) sorted that out.
So far I think they are faster and less susetipble to RF noise 
than the 200AV units I already had. If anyone is interested in 
them I would say that the only problem with them is that they are 
quite large so no use if your power sockets are very low.
-- 
Adam Trickett
Overton, HANTS, UK
Blessed are the pessimists, for they test their backups.
    -- anon
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