general consensus on what works and what doesnt with a LS3 cam upgrade

[EBBETT307]

for all out torque i mean useable torque on the street comp have a range of cams there a friend has come to me for some help he wants torque that is useable on the street and a choppy idle like all do like but 14 + lsa will make more power because of the rectangle heads ive looked and
anyone here used the 219/235 .607/.621 113+5 Comp LSR cam
I thinking mite be a ball tearer and suggestions?