And now with my new AV1200's from TP-Link. Amazon.com: TP-LINK TL-PA8010P KIT AV1200 Gigabit with Power Outlet Pass-through Powerline Adapter, Up to 1200Mbps: Computers Accessories
Hopefully these ones won't over heat.
On my Nexus 5 it's download: 87,31 Mbps upload: 37,62 Mbps at home. On my work it's download: 109,26 Mbps upload: 48,91. Vodafone 4G.
I suggested this as a lot of people who have both don't realize how much faster the 5Ghz system is than the more usual 2.4 Ghz system -- even on an 83 Mb wifi connection on 2.4ghz you'll find that will up itself to around 250 Mb on 5 Ghz -- download around 3 - 4 times faster -- and less interference from other traffic too.
Of course you'll need 5 Ghz capable wifi cards but most modern devices have it - and other devices on a wired Lan will still be acessible.
(Your 2.4 ghz connection should still be able to see devices on your 5ghz wifi connections -- your LAN takes care of all those things).