Works great and really good suction right up to the point of battery exhaustion. Runs long enough for a cordless. Get a corded for the large jobs! 
2 things I didn't like:
1.Wide appearing suction paddle only has a suction channel as wide as that grey extension: this is no whale shark of vacuum. When not extended and the handy brush isn't deployed, the paddle tends to stick to hard surfaces and wont suck. Not a big issue.
2. Crud gets stuck behind the non return valve inside the main cannister and has to be fished out. I am sure this degrades performance during operation.