Product review (5 stars): great for the price.
I fitted this myself reasonably quickly.
It works great and is not that noisy at all. (although it does go 'clunk' every time it starts, but the paperwork warns you about this so its normal.
I gave it 5 stars, even though it comes with a plug attached to it, and my previous one was wired directly into the electrics.  I had to install a socket under the sink to use it.
Otherwise I highly recommend this product.