Hi I'd like some information fairly quickly please...
I'm looking for explanations/ guides on the following

A comparison between a digital multimeter and an Avometer
comparing performance characteristics such as
range of features
number of features
accuracy
sensitivty
usefulness 
limitations 
applications (when is a digital mm more useful? when is an AVO better?)

and anything else useful

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 The answers can be fairly basic like college level.
   It should be fairly easy to answer by someone who works in electronics

DMM:
The problem with DMM's is that the resolution depends on the used AD
converter. You end up with uncertanties because of that plus at least
1 digit. Digit means: The least significant digit can be either one up
or one down. And that is what has to be added to the whole equation.
DMM's are nice to use if You need an absolut value and accuracy is not
much of a problem (unless You buy a very expensive and highly accurate
meter from say HP).
Analog meters:
These do not have the above disadvantages. The problem here is
normally, that the used current/voltage is rather high and brings in
the measuring errors. These can be calculated away if necessary.
Analog meters are nice to display tendencies. It is easier to to see a
change on these meters than on DMM's.