As of Sunday afternoon, my stats are as follows:

Ping 15ms
Download 32.63mb
Upload 7.26mb

This is over wifi, so most impressive. Everything holding steady since yesterday morning.

The only problem we have encountered so far is with the router getting confused by our plug-in extender. If a device connects via the extender, the router assigns that device as being connected by ethernet rather than wireless (probably because the extender master unit is connected via ethernet). It doesn't like that at all - possibly because it looks like there are more devices connected via ethernet than it has ethernet ports - and won't let those devices connect to the router. Even if those devices are disconnected from the extender, the router won't connect with them directly unless the router is restarted to clear all the ethernet connections it *thinks* it has. Hopefully I'll be able to find a work-around for that. The old HomeHub 2 had no problems with the extender.