"Whether you like the nesspresso coffee or not is a question of taste, however as far as service and cleanliness of website goes, Nespresso.com gets top marks.
While not a bargain site, you get constant prices from Nespresso.com and a flat shipping of $6.95 (at the time of this writing). It helps to keep an eye on occasional deals they have to be able to scrap the shipping costs or get 5-10$ off your capsules order, and of course you want to buy in bulk to keep unit cost to a minimum.
If you are buying the espresso machine, make sure to get a sale deal, I found their machines to be pretty good but always look for a return policy wherever you buy it.
As far as customer service they are as good as it gets. Always a live person on the phone and always very helpful. They will replace broken parts, fix any errors etc. They have local people even though they are a Swiss company.
The website is easy to use, they have pictures of everything so it's easy to see what you are buying and checkout process is easy with the shipping (while not free) is extremely quick."