That is a vaid consideration, front ports allow you more placement flexibility. With $500, I would consider the Level Three bookshelves and Level Three center. I think for the money the Pioneers are great, but I would put the HTDs above them.
Samsung PN60F5300 | Denon DBP-1611 | Roku 3
Denon AVR-1713 | EMP E55Ti | EMP E56Ci | EMP E5Bi | BIC F-12
Topping TP23 | NHT SuperZero 2.0 | Velodyne DEQ-8R