I have not touched the maximum storage capacity on either of my PS3s or Xboxs.
Not by a long shot.
Would definitely prefer SSD speed over more storage.
In fact, was lamenting up to last night on how slow the interface is on the 360 while using the Kinect.
It's screaming for an SSD.
The PS3 is even slower.
Can't wait for the next generation of consoles. Do agree that US$200 is too much but I hope by then SSD is cheap enough to be standard issue. Won't mind paying a small premium for it. Say US$50.00
