Another vote for TEquipment.net for US residents, as they offer a discount.
Once the discount is applied, they're cheaper than their competition, and it also comes with a free gift and free shipping (i.e. $788.66 for the DS2072A 70MHz version to your door).
And the reason I mention the 70MHz model, is they can be hacked to activate the software options as well as increase the BW up to 300MHz. Go to
http://gotroot.ca./rigol/riglol-103d/, type in your unit's S/N, and enter
DSHH in the Options field (unlocks all options). Leave Private Key blank, and hit Generate. A small box will display with the necessary key that will work on your scope. You may need to try it a few times before you get the key. How to enter the key is in the user manual under Options.
PM sent.