Sharp Twin Energy
Panasonicvac,
The Twin Energy lines (especially Design 1 above) feel, sound, and perform like a Panasonic. I honestly wonder if Design 1 machines were badge-engineered Panasonic machines....they are SO similar in all aspects.
If you find one for the right price (in good condition), it is worth the buy. Designs 2 and 3 don't seem to be as common, but they also clean very well. I can recall my aunt's Design 2 Twin Energy performing well. It also sounded just like our Panasonic-made 10 Amp Kenmore budget-model upright we had at the time so I can't help but wonder if Panasonic had something to do with those as well...
Overall: Great vacs, neat designs, well worth the buy if in good condition!
