curve 100%, every curve has its advantages and disadvantages, looking at a pattern chart will tell you which. like the backstrom curve is the stickhandling curve, where as you will see the staal is better for deflections. look at bauer.com and see what all their curves offer
For me. I like a short stick that's not too pingy and is light weight, gotta have a rockered heel or lower lie, and the curve really only matters when it comes to toe drags which are about 1% of my stickhandling.
I disagree with saying the curve is more important then the lie of the blade. When you have to stick handle closer to your feet with a flat lie it becomes very difficult because the heel ends up off the ice, and often the toe of the blade is the only contact with the ice making it very difficult to control. This goes along with shooting, bringing the puck closer to your feet to get more power on the shot lifts the heel end of the blade off the ice, if the lie is too flat you will wiff the puck sometimes.
I think there both equally important, if either one is wrong your going to encounter the same frequency of problems.
This is just my experience and opinion of course, you probably just need to get used to the curve more.