I just installed WHS for my father (HP EX490) connecting to his 3 laptops and desktop PC. All his Laptops are running W7 and his Dell Desktop is running XP, it was an absolute doddle. Fully mapped shares on all of the machines for his work. Mum has her own mapped folder for her stuff, the family have their own folders to remotely upload family photos, and his clients have their own folders that they can remotely access with their reports and data.
It backs all of his PCs up at 6pm whilst he is having tea and it holds all of his music, which he listens to on a Logitech Squeezebox Radio.
I chose the WHS as it is low maintenance and gives him the flexibility to use it for both his consultancy business, as a repository for family photos and for streaming his media. Plus he has the peace of mind of daily backups.
I have also subscribed to McAfee Total Protection for the server as he has a diverse range of data sources.
The server also hibernates between 1am and 6am when it is not in use.
Mushii
I'd leave it on all the time - rebooting daily with drives power on and off is going to vastly reduce their life and put strain on the drives + other components. Servers are supposed to be left on and work with little day to day interaction imo.