If you occasionally fly on LCCs, the cheap heavy luggage can cost you more in fees than the original price. Of course some of the luggage mentioned is expensive heavy luggage. I would seriously consider the weight of the luggage.

Explore

PS I do not own this model but the Osprey Vector 28"/75L suitcase has a capacity of 4600cu and weighs 6lbs 11oz/ 3.02Kg. A 3kg suitcase makes it easier to survive a 15kg baggage allowance.