Id probably go with CR/Vtec also.... then again...it might cost you a lot more.... You would need to get the parts individually as opposed to jut getting a B16/B18 and just getting the head/ or bottom on later on as well as doing the conversion for it.

Anyways, i like the cr/vtec setup better, its has tad bit more torque, but like i said, parts might get expensive, you would need the block, the vtec head, axles, trans, shift linkage, ARP rod bolts, a couple more other things to make the setup work.