I've been through three mini bows, I really really really don't like them anymore. It's hard to get a heater in, there is nowhere for the cord to go. The top of the tank cracks easily when you have the lid go on and off all the time (like when you change the water) and yes the filter dies fast. The temp is hard to keep stable with the light ... Brings it up several degrees when it's on. The filters current is really strong for the space. And the filter won't fit any other aquarium. Oh and the teensy clip that holds it on breaks quickly. The filter also blocks the light on one side of the tank.
Also it only holds .75 gallons of actual water.
The 3 gallon Marineland kit is usually on sale at Petsmart for about $29. The filter is much better yet gentle, the led
lights don't get hot and are brighter, the filter can be moved to other aquariums, it's easy to get a heater in, and it looks less like a kids toy. Holds 9 quarts of actual water once decorated.