Hang on Protein skimer..?which to purchase
 

Greetings...I am looking to purchase a hang on skimmer suitable for tanks 30-50gal.
One that was suggested is a Aqua C Ramora. How does this compare to others? Pros and cons of various options would be helpful. It is for a mixed tank (no sps but has seahorses and clams)

Thank you for your advice..I am too new at this to make an educated choice:(

Recently discussed here:

http://www.canreef.com/vbulletin/showthread.php?t=53033