Product review (1 stars): Good power, inexpensive, may squeak, broke after 3 years of use.
the pros: powerful and relatively cheap.

the cons: The unit started squeaking loudly at about 1 year of household use.  I took it apart and lubricated the bearings (a pretty big job).  The squeaking went away for a few months and then returned.  Now, after 3 years of use, the motor binds up on the 1st speed setting.  No more squeaking, no more suction, no more warranty.
Unfortunately, I will probably buy another one of these as it would be expensive to make another unit fit.  I will buy a warranty this time and request replacement as soon as it starts squeaking.