As Gonzo says, most people have made their minds up anyway. So, whatever is said now isn't liable to affect the outcome that much. It will be close though, I think.
For me, in any decision of this nature it always comes down to what effect will this have on the economy. It's always the economy first as all else flows from that. If your economy is performing, your options are far, far greater. Far too much is being made of immigration and the effects on the economy are not being highlighted enough, for me.
As I have zero doubt that leaving the EU at this time will damage the UK economy - something many leavers concede, although how badly is disputed. The fact remains that the economy will be damaged. The U.K. is just emerging from the worst recession in more than half a century, there is a very good chance that a vote to leave will send it back into recession.
So, if the economy will suffer then the choice is clear. Vote to remain.