I am an acrylic fan, but starphire (low iron) glass tanks are nice. It is really an individual preference issue IMO. There is a "sticky" on the subject in the equipment section at zeovit.com with discussion. It sort of breaks down like this:
Glass pros: starphire is as clear as acrylic. Much better scratch resistance--therefore easier to clean
Glass cons: harder to drill--you really need to drill panels before the tank is assembled and you have to bear in mind structural considerations. If you scratch you're hosediiyou can scratch glass it's just harder. Much heavier than acrylic. And its seams not bonds at the junctions
Acrylic pros: lighter, clarity, bonded, you can drill willy nilly,
Acrylic cons: you have to have bracing of some sort to prevent tank deflection. Scratches