I have the A&E corner aviary - LG. The dimensions are 52" L x 42" W - 74" H. 1/2 inch bar spacing, powder coated finish. VERY BIG!!!! I paid around $350.00, and it was worth every penny!! I love the cage, and more importantly, my babies LOVE the cage. I have 3 gliders in this cage and they actually have room to glide. My two older girls were rescues, and of course they came from pocket pets!!

When they came to me, they were fully grown, and still living in the "starter" cage. I felt so bad that they had been living in such a confined space, that I set out to find the biggest cage I could for them. I will say this though - when the cage arrived there were no instructions for assembly. Luckily my husband is mechanically inclined - but it was still pretty hectic to say the least!! Also, with the cage being so big, it is impossible to get out a normal sized door for cleaning. Luckily, I have french doors leading out to my back yard. I take it outback once a month for a top to bottom scrub.
Seeing how happy my girls were the first night they moved into their new home made it all worth it. I say...the bigger the BETTER!!