I bought a Bagless one, and had no end of problems :(
I then bought a V/C with Bags, and have never looked back.
It is dead easy to place the bag in, no having to empty all that dust...in a bag! at the end it is full.
Bagless to me: A total waste of time, and unhealthy having to empty, with no real dust free way!
I love to pop a bag in, and a couple of weeks later take it out, no mesS OR DUST TO HAVE TO DEAL WITH....WINNING! :)