Using the current Logitech 600 I range from 900 2500( most common daily) 3000 dpi @ 1k HZ the lowest I'll rarely use unless playing fps and sniping from range. With a Razer Goliathus Control normal and wide edition mouse pad. After using the Razer Naga for years of WoW playing I can't seem to toss the mouse set up, I end up using this mouse for more than gaming and quick short cuts with all its keys. It's my key factor much like my new and current G710+ from my now glitchy Razer Lycosa, take that Linus >=) punned back.
I haven't changed this set up for a while ever since my Logitech 500 (first gaming mouse) I use to be within the range of 800-1.5k. @ 1k HZ