Looking to get a new 30-40 gallon tank in the coming months. Are places like Petco, Petsmart (or even Wal-mart) good places to get glass aquarium 'kits' (come with pretty much all the equipment you need)? Not looking for the absolute best price, but reasonable and good quality. Also, for 30-40 gallon, would you say go glass or acrylic tank? Weight is a little bit of a concern, but is it worth the savings to go acrylic (i.e. how much do you save by going acrylic or are there other advantages at this size?)?