I have found the way to dumbell progression heaven! I use hexagonal dumbells as they are so practical, no need to change plates, just grab your load and lift. The one problem which everyone knows is progression. Normally to progress the load you have to jump up 10 lb.s (5 for each dumbell). Today I bought platemates- little magnetic weights that attach to the dumbells. They come in 1.25 lb.s and 2.5 lb.s, so for example if 55 lb. dumbells are too easy for you, but 60 lb. db's are too hard, you can attach the platemates to your 55 db's and you instantly have 57.5 db's!!! I love these things, they are an HSTers dream come true for progressive loading!