I like your choice for the price Rob,

A *rich field* telescope generally has a wider field of view. The draw back is lower magnification for best contrast of images. In other words you won't see as much detail in lunar and planetary viewing. With the 10" f4 all you have to do is increase your focal length with a barlow for use of higher magnification lenses, but don't except the results of a 6" refractor or 8" catadiaoptric.

Another thing to consider is the deeper Messier objects that might be harder view with lower magnification.

You might want to check Sky & Telescope for there list of scope reviews.
A great all around scope for the price, IMO.
SteveS