These 2 products are very different and shouldn't be considered against each other . The one kit is practical and can do 50 to 80 mm so can be used daily and with sensible ride , the other is more for show vans and does 100 to 130 mm apparently , this isn't a common sense buy if the van is used daily in my eyes . Chris can maybe offer more day to day advice because i would never risk driving a van this low on UK roads ( or race tracks haha )