I've looked at the Kirby, and used both the Rainbow, and the Electrolux,over the years. Since all three brands are sold through a sales network, the prices commanded are 3-4 times what they or a similar cleaner are worth

One thing I can say for the Electrolux is that the company really supports their product. After we arrived in the UK, ours started shooting bits of the commutator segments out through the vent holes of the cleaner body. A letter to the company got us a new armature, impeller, and several sets of commutator brushes. It may have been overkill, but it certainly insured that we didn't have to post the entire cleaner back to the States and wait for its return.

Dave