I love the single serve
Reservoir holds just the right amount of water..
Negatives
It leaks water
Still working with customer svc on issue..
I purchased multiple units and 1 had a issue.. 
cust svc has sent a warrant replacement 
Cust svc has been great...
Replacement unit leaks worse then the first one
Awaiting another replacement.. 

I would rate it a 5 without water leak