I think for Thunders you want skinnier treads to avoid the baseplate drag thing (if that is bothering you)
i prefer the spitfire classic because i am a slappy skater just to give myself more tip but i would say if you are a ledge skater like Wade you
would want the radial / radial slims instead because you probably dont need tip you just want to stay as solid as possible.
i ride 51mm size classic (worn down) and i have virtually zero wheelbite marks sitting on a 52mm height thunder 148 (kingpin sitting flush with nut) everyone says my setup is really fast and it turns well and has a nice weight to it
compared to my friend sitting on mindy Reynolds' at a 51mm height, rocking bones bushings with no bottom washer, and 54mm classics, basically has man made wheel wells at this point.