Mahadev, there is a lot of information on each of our kites on our product pages… each kite style is designed to meet different riding styles but if you are asking what is our most popular kite is it currently the Razor, though the Cypher is close behind. Again though, they are totally different kites from one another.
In terms of hang time, yes, as you go down in size the kites will fall from the sky faster. I love my 10m Razor for jumps but - given enough wind - will always prefer the 8m as it is a smaller more nimble kite but still big enough to get some really good jumps in with. @ 93 kgs you are almost my weight. I ride a 7/8/10 quiver of Razors with a Flite 15 for light wind days and a Mako 130 and a Surf Board for my 2x boards… with those boards and the kites I have chosen I am covered for any condition.