I had this cage too, just got a 3rd upgrade not too long ago. The cage has plenty of room (love that), and I REALLY miss the levels (they are removable and you can use and move them as you put in different sized toys etc).
For me, the perfect cage would be this cage and it's great levels only sturdier with bigger doors that swing open (these you have to pull up and they slam down (on a little neck if not careful).
It was flimsy (not that the gliders tried to make a break for it). I couldn't get some of the larger toys in and out, as the doors are only 10"x10". My spoiled babies heard about the new glider tread mill and HAD to have one. So - new cage with bigger doors. But for a first cage, one you might have for the first year, it would be great :-)
The only thing I found better than this one was the extra large sturdy cage I just bought for around 300$. If I couldn't do that one, the one you found there is the one I'd use till I saved up :-)