mech to Hyd CAm, Springs

Not a lot of difference. If the installed heighth is right for your cam and the seat pressure isnt too high they will work fine.If the installed height isnt right or the seat pressures too high you will see premature lobe wear. I bet cam manufacturers use the same springs with different cams. I would get a comparison by looking at comps cam chart and find two cams that compare to yours. Then see how much difference is in the spring specs.