Shark Rocket DuoClean HV381 VS. Shark Navigator NV356E

It features a powerful suction of: 245 Air-Watts.

DuoClean-technology uses a bristle brush to deep clean carpets and an additional soft Brushroll for cleaning hard-floors. It also features Triple Particle Cleaning technology that works with Duo-brushes to remove the three types of dirt from your floors and carpets.

It Brushroll spins at from 6,500 RPM-to-110,000 RPM.

The TruePet Mini Motorized Brush helps to capture embedded pet-hair on surfaces.

This device is corded which implies that it will provide longer run-times using direct power compared to cordless vacuums.

It is quiet most especially when cleaning bare-floors.

DuoClean Technology uses a bristle brush to deep clean carpets while Triple Particle Cleaning helps to remove small, large, and stuck-on particles from all carpets.

This unit features washable filter and component for easy cleanup. Additionally, there is also a Brushroll-Garage that provides quick access to the Brushroll from the top of the vacuum making maintenance quick and easy.

This ultra-lightweight upright vacuum easily converts into a hand-vacuum for easy cleaning of hard-to-reach areas. Additionally, its compact-size and maneuverability makes it ideal for cleaning underneath and around furniture.

Features Swivel Steering Technology that ensures easy maneuverability in and around hard-to-reach areas for a quicker and more convenient clean.

Yes (Bagless technology Saves time and energy with no bags to buy or replace).

The full Upright-vacuum weighs 7.6-pounds while the handheld-vacuum weighs only 3.10-pounds. This makes the device ultra-lightweight for versatile floor-to-ceiling cleaning.

This upright-vacuum easily converts to a handheld-vacuum for versatile floor-to-ceiling cleaning.

Its DuoClean motor uses 600-watts of power yet it creates a powerful suction.

The 0.25-gallons (0.91 dry-quarts) Dust-cup holds a huge amount of dirt so that you can empty it less when cleaning.

The Powerful LED headlights on nozzle allow for spotting of hidden debris throughout your home.

2 power-modes of: ( Hard-floor-mode & Carpet-mode).

Wide Pet Upholstery Tool, Dusting Brush, Crevice Tool and Dust-Away Hard Floor Attachment with 1 Microfiber Pad.

This vacuum-cleaner is made of a combination of durable ABS and PP plastics along with some metal & rubber components.

It is affordable and fairly priced.

• Ultra-lightweight. • Lightweight design. • DuoClean technology. • 2x capacity removable dust cup. • Soft Brushroll cleans hardfloors. • Bristle brush deep cleans carpets. • Bagless technology Saves time and energy. • Captures embedded pet hair on all surfaces. • Dual Brushroll for triple particle cleaning. • Powerful LED lights on the hand vacuum and nozzle. • Easy access Brushroll garage for easy maintenance.

 It is not cordless.  It lacks HEPA-technology filters.