Vacuum cleaner dilemma

I need a new vacuum cleaner.  My current machine does not turn off unless you unplug it.  For the last year or so, the brush roll seems to have a mind of its own.  The unit, a Eureka upright, is about 6 years old.  I guess it’s time to put it to rest.

For years, I worked for Eureka Vacuums, so I have always felt loyalty toward this company.  But now with so many different options, and since I’ve been away from the industry for many years, I feel like I’m at a crossroads as to what brand and type of cleaner to purchase.

Everyone I know that owns a Dyson, loves it.  I’ve heard people say they didn’t realize how bad their previous cleaner was until they used a Dyson.

I notice this week Target has the Shark brand advertised (receive a $20 gift card with purchase).  I don’t know much about this brand.

Walmart has Bissell advertised.  And I know Costco has a pretty good selection of Dysons.

If any of you have any recommendations about which cleaner brand and type I should consider, your comments would be appreciated.