One more helpful link that may be of use to you is the Date of Last Observations of Comets published each day by the MPC:

 

Although I strongly urge observers to never rely on other observers' estimates, this can be used as a guide to determine which comets are indeed visible and which may be in error in terms of expected magnitude.

Typically this list is updated each morning.  It will give you an excellent idea of which comets to pursue for your particular equipment and limiting magnitude, etc.

 

Dr. Clay
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Arkansas Sky Observatories
MPC H45 - Petit Jean Mountain South
MPC H41 - Petit Jean Mountain
MPC H43 - Conway West
http://www.arksky.org/