Heads question

Here's the question at hand....
I've got 2 sets of heads; 1 set are the J heads with 1.88 intakes. These have been ported, polished, and cc'd to run about an 11.5:1 CR with the TRW 13:1 pistons I've got. The other set are high mileage stock X heads with 2.02 intakes. The X heads would require quite a bit more work, and my builder tells me the J heads will give me better off the line torque with the smaller valves and won't affect top end that much. True or false? Would I be better off investing the money in the X heads, having 2.02s installed in the J heads, or leaving well enough alone?