Hmmm.... I have only tried 3 kinds of blocks. I think I might have to go to a get together with a bunch of stamping friends and borrow theirs and try them all out for a long period of time. Like to make a few cards and then compare them. I like having grid lines and various sizes. then I also like having the curvy blocks to hold on to, I guess it depends on what you need and what you are going to stamp and how many you have to do,. And if you are like me, I have to have a bunch of stamps out all over the place....
and yes price makes a difference too. Thanks