Generally, glider people order the Brisbane, Congo or Madagascar cages from exotic nutrition. They are known to be good quality, heavy wire cages that last a long time.
The peaked roof cage... I'm not sure how heavy the wire is, I don't know anyone else that has one to see it first hand. If it's the flimsy wire like used on flight cages that would be why it rusted so quickly.
Congo vs Brisbane the brisbane can be doubled side by side, the congo can be doubled back to back.
Congo Measurements: 52 inches tall (67.5 inches tall on the stand), 32 inches wide, and 21 inches deep. Can hold 3 - 4 Gliders comfortably.
Brisbane Measurements: 36 inches tall (63 inches tall on the stand) x 33 inches wide x 22 inches deep. Can house 2 - 3 Gliders comfortably.
Congo is a hair taller but also a hair narrower, both are made with the same gauge wire, same latches, I think the difference really is just the measurements otherwise about the same cage.