i think the 7s are more fitting for a portable, but thats me. You can definitely shred with a 7' on a normal turntable. It's pretty fun, and good practice for getting precise with your cuts. 7s, to me, these days, are collector's items. The 3 pack is on my purchase list along with some others. I have the 3 12s which are nice, but since CNP, TTW, TSL have come out with several releases since then, I forget to pick em up. They need to make Volume 4.. sheeeeeeeeeeeeeeeeIT!