On the pro side:
wonderful manoeuvrability.  
replacement filters are inexpensive. 
light at the base is helpful.  
stands up on its own.
suction and cleaning is good.
price is GREAT.
the crevice tool hangs on the back of the wand (clever design!)

On the downside:
I have trouble releasing the handheld vac off the stick.  
crazy lame finagling to open up and empty out the dust bin (hate this part).  
while the machine will lay flat to get under furniture, the size of the vac to too big to fit under any of it.
the brush head for the crevice tool falls off when the thing is mounted onto the wand.