Springs--easy, common, work just fine.
Springless--harder (initially), should be stronger maybe, and stuff.
Studs and cone washers should be stronger, and are more common for what I've gotten locally than using taper-seat nuts.
When I cared, I was looking for the upper bearing conversion to replace the spring and plastic bushing cuz I liked the idea. I never did find one in time, so I just ran with stock stuff. I never once had any issues with that, so if I were to do it again I'd just stick with the easyness once again.