Which wetsounds amp for Rev 410??

So I am going to place my order on some wetsounds rev 410s for my new boat (axis) tomorrow. I previoudly had 485s in my nautique with a syn 4 powering them. Loved them. Looks lije the 410s can handle more power however. So my question is: Should I get the syn 4 amp again or go with the new sd4 amp? This would put me over rms but I have heard of people running syn 2 x2 on the old 485s so what would be the best setup with the new revs? Baisically am I going to notice the difference and will the sd4 be too much for the 410s? Hope to hear from tim white the man soon!