Well when i got my g4 it came with the shampoo system and i not evan dared to try it, knowing me it will probably make the kirby blow!
My gran use to shampoo her medium carpet with a heritage 84 and it always brought up the carpet nice and fluffy.
No, when i used to shampoo my apartment i would first use the Kirby then follow up with the bissell big green with a water rinse it seemed to work pretty well but as a standalone carpet cleaner it's not that great
I agree it isn't worth $200.00. Shop at the local thrift stores you can often times find them for less than $20.00. Rummage sales are also a good place to find them.