the bes top mount is the one i had with your mom last night....lol j/k . But seriously bigger isnt always better. SOme of the best top mounts arent that large. It also depends on how much you really want to spend. HKS makes a jdm one that from what i hear is incredible, but its $1400. THe helix one is supposed to be tight but its relatively new so i dont know much about it.