94.0  The Shark Navigator Lift Away gets excellent consumer reviews - and reviews are plentiful.  This machine uses much of the same technology as a Dyson, namely cyclonic suction (technology that provides no loss of suction), bagless design and HEPA filtration.  It also carries a similarly long warranty of 5 years.  Owners like the vacuums suction power, maneuverability, and light weight but a few lament the short length of both the power cord and the hose.

67.1  The Shark 2-in-1 Cordless stick vac is both a stick vacuum and a handheld.  It is lightweight and also maneuvers well.  However it does not please consumers like its bigger brother the Shark Navigator.  On average the Shark stick vac gets poor consumer ratings and many feel that the battery life is too short and that it is not a durable machine.

87.0  The Euro-Pro NV22L is popular with consumers and gets consistently good ratings.  It also comes with a 5-year warranty and uses cyclonic suction like a Dyson. 

80.6  The Euro-Pro Shark SV736N 15.6-Volt Cordless handheld vacuum is usually in the neighborhood of 50USD and it gets good consumer ratings. It has a motorized brush for vacuuming pet hair or lifting out ground in dirt  - the brush can be detached from the vacuum when it is not needed..