I got a PA4010 Kit and it works pretty good between my flat and my cellar. 
It also worked with a power outlet in the building's public area, i.e. across 2 power meters.  I'm fine with a speed of  "only" 44 Mbps.

It did not work well on a power extension strip with multiple sockets. This is somehow clear to me and mentioned everywhere.

That's the reason why I replaced the PA4010 by a PA4010P Kit with Passthrough socket.

This works the same in the easy environment, but cannot find the partner when trying the connection to the power outlet in the public area.

The middle (PowerLan) led remains off and the tpPLC utility does not show the pair.

My questions:

- Are there different hardware capabilities regarding powerlan range between PA4010 and PA4010P or are there individual differences ?

- I read a hint to switch off Power saving mode for the PA4010, which I did, but I cannot find this feature with my PA4010P ?

- Are there better models available, regarding connectivity range?

I heard speed and range optimization are very different, so a slower model might rather even be better for my needs?  That's why I chose the PA4010. 
( I don't want to watch movies out there in the basement, but transmit a few data to a server via my home internet router)