[USR-TC] TCS recommendation?

hi, i am intending to buy Hiper DSP Multispan cards together with ARC2 and NMC333. i would like to have list member's recommendation on which TCS should i buy? 4.5 or 4.7? (or if there any other recommendations?) thanks & rgds, -- To follow the path: look to the master, follow the master, walk with the master, see through the master, become the master.