Acrylic or Glass?

I'm buying a new aquarium, probably a 46 gallon bowfront and would like to
know:

1. which material is best, acrylic or glass?
2. which manufacturer is best?
3. One acrylic unit I am looking at has a wet/dry filter built-in the back.
Is this a good idea?
4. are there online sources of independent aquarium reviews?

Thanks in advance.
-- 
Larry Bohen
www.audiobooksonline.com