I in all honesty prefer the A-5. It's a proven design, and prices are now coming down becasue of the X-7.
Although the X-7 cyclone hopper can handle 20 bps, the firing mechanism can tops reach 8 bps, and the E-boards aren't out yet I believe.
Meanwhile the A-5 can reach 16 bps on a 19 bps hopper, and you aren't allowed more than that in most tourneys.
So....
Go for the A-5 on a basis that it's better value for money and more reliable with a currenly larger selection of USEFUL parts.