Wind factor, and opening straight is also upgraded, look at the MR2 video, we don't have a celica whit lambos to make any more vids, but felow forum mambers will be glad to post pictures and videos! http://www.c2design.hu/celica/mr2lambo/MOV02164.MPG
How much you have to open the door before it goes up is nothing to do whit the hinge design, it depends on how thick the door panels are.
How hard the door goes up...the harder it lifts, the harder it is to close, so you really have to find the best solution to help you open it, but it won't be too hard to close it. This time we got it perfectly, and the new doors are selling whit different Gas springs
Please don't start to bash products until you have personal experience.
We have a few of these allready in the states, and we can ship it from Miami for 950+ship any day, let me know!