I have one of those, and yes, edge cleaning isn't fantastic, and the brushroll is a bit soft I find, but it's not too horrific. In the UK it's rare to get an electric power head at all, one bonus of it is one can clean up late at night with everyone in bed, and with the machine set quite low it still spins at full power, giving an acceptable, if not too deep clean!
My main beef with it is the cord! To use the tools you need to de-wire the whole thing to take the hose off the tubes. I cut my cord and fitted a plug and socket so at least it was quick, you just had the end of the cord flapping about. In my small house it's a novelty more than useful, it's in the loft now!
You can flip the end caps around though to raise or lower the brushroll by a few mm. Makes a bit of a difference, but not much.