must be able to do stop and going delivering papers

Is all-wheel-drive also a requirement?

Are the long trips at highway speed?

You'll get middling fuel economy out of the CR-V and Escape. Reliability has been very good with the Honda, but questionable with the 2006 Ford (2007-2012 have been better).

Vehicles some courier services in the survey have driven for many miles include the Honda Fit, Pontiac Vibe, and Toyota Matrix (the last two are the same except for styling). All three would have plenty of space for the papers.

I would second Michael's recommendations (I drive a Fit myself) but you may also want to consider an older Prius. If you're putting a lot of miles on your car, and especially city miles, they're really the lowest cost of ownership vehicle you can drive. Note that 04 and newer have very reliable batteries, however the 03 and older models may be more likely to need a battery and they get slightly worse milage. They're cheaper and still very good cars though. I prefer the interior configurability of the Fit, and the Vibe/Matrix will be similar, but if you check out a Prius, it may also work for your needs.

For another option, if you need MORE space than a Prius/Fit/Vibe/Matrix, a used Mazda 5 may also be a good option; when you take out the back seats it has a LOT of room for their size, they're fairly reliable, and get OK milage.