Slicehost's included transfer makes a huge difference. Take the 4GB level: Slicehost w/1600GB transfer == $250 Mosso w/1600GB transfer (assuming 75% out w

Slicehost's included transfer makes a huge difference. Take the 4GB level: Slicehost w/1600GB transfer == $250 Mosso w/1600GB transfer (assuming 75% out which is likely an under-estimate) == $470 Mosso w/1600GB transfer (100% in) == $303 So, it depends on how your application will work. Mosso has a lot of bandwidth charges that start to add up.