Which tank do you have and which do you prefer?? i love the look of the acrylic tanks and adore the rounded corners (well, i spose they arent corners if they are rounded ) but have only ever had glass tanks. Price has a little do with it but i am mostly put off the acrylics because they all seem to come with filter and heater built into the hood which worries me because of the cost in case of a breakdown.....