Sorry I don't know if I'm too late to comment but I have that exact 5.5gallon starter tank at Petsmart. It's glass which doesn't scratch like acrylic and was constructed well with no leaks. The hood is high quality and has a door in the front to lift and feed your fish. I replaced the incandescent bulb with those CFL bulbs they sell, all is good. One negative I have is the filter.
The filter that comes with it stinks since the water flow is non-adjustable and was too much for Rumble. I baffled it with the plastic water bottle trick and was able to slow down the pressure. However, the water bottle that I cut out had sharp edges and I wasn't too crazy about the look. I ended up replacing the filter with the Marina Slim S10 filter, which is sooo much better since you can adjust the water flow. Hope this helps!