It seems that AllGlass has changed their name to Aqueon, and has started selling filters, food, and accessories in addition to tanks. I think they are still owned by Oceanic. I recently bought a 15 gal Aqueon tank.
Anyway, I once owned a 7 gal minibow complete with glass lid and fluorescent light for which I spent about $70. Unfortunately, I thought that the bowed glass grotesquely distorted the fish as they moved. It was like viewing an aquarium in a funhouse mirror. I just found the distortion too distracting. Perhaps the bow effect is just better suited for bigger tanks (40+ gal). Also, the minibow tank took up the same amount of space as a 10 gal. I'm sticking to rectangular tanks from now on.
I can see the appeal of those compact systems, but boy do you pay a premium for them! You should be able to get a 10 gal tank with glass lid for about $30, or a 15 gal tank/lid for about $50. Add $30 for a flourescent light, $25 for a good HOB filter, and $15 for a heater . I think you get more tank for less money if you buy quality components separately. Of course, it doesn't look as sleek as an all-in-one system, but the tradeoff is a slightly larger tank and some money left over for substrate, plants, fish, and food.
As far as stocking, guppies would be good. So would a small school of cardinal tetras, neon tetras, or harliquan rasboras. If you can find them, Endlers livebearers are very pretty fish too. These fish all stay small - one inch or less. The general rule of thumb for such small fish is one per gallon.
