You didn't say whether it was numbness, pressure, or the angle of the bars so we are all just guessing. I just changed out my bars because the angle caused discomfort between the thumb and first finger. That's something that doesn't respond well to changing seat position and stem height. Pressure and numbness otoh can often be a bad "fit" that can be corrected. So you need to figure out if it is a problem with your body angle and weight on the bars, your reach (or lack thereof), or the angle of the grips. I'm a big fan of north roads bars, you can flip them over for a more aerodynamic roadie like position or leave them up for a more laid back riding position. I'm also a smaller person so I needed a narrow bar to relax my shoulders. Try tilting your seat back a bit and see if it takes pressure off your hands. If that helps, you need to work on getting the right fit before you start swapping stuff. Or see if a shop will let you try a couple different styles of bars and give you some fit advice.