Ok so im looking into strops, i want to get something that would be useful for both my straight razors as well as my chef knives if possible. I use high quality chef knives, and i have natural water stones up to about 20-30k grit.

i was curious if one could just strop on the whetstones to refine the edge or if a strop is really necessary? I know it works with my knives would it work for a razor?

If not which is the best for stropping, lether, felt, balsa, not really into pastes much trying to not spend a lot of money reasoning behind getting into this.

have been looking at these-

Split Leather Strop, magnetic strop, magnetic stropping pad

Rock Hard Felt Pad 11"x 3"

Horse Leather Magnetic Pad 11" x 3"