RE450 should be the best choice because it has super fast speed.
However, it's recommended to consider wireless powerline extender, such as TL-WPA8630P-KIT if you are in one power meter.
The powerline connection is more suitable for differnet floors.

Thanks for that, i'll look at your suggestion, powerline is out however as im a radioham and powerline tends to interfere with radio at the frequencies i operate.