Miele - Complete C3 Cat & Dog vs Shark - Stratos Upright

These two are nearly even on the Mars Score (67.7 vs 67.5). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.

Pick the Complete C3 Cat & Dog if you care most about dustbin / suction (aw). The biggest gaps in its favor are dustbin, suction (aw). The single most decisive one: Dustbin — 354.55% more. 4.5 L vs 0.99 L.

Pick the Stratos Upright if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight. The single most decisive one: Weight — 1.80 kg less. 7.5 vs 9.3.

Both ship with comparable battery, cordless, so those specs do not separate the two — focus on the differences below.

Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.