Overall the ASUS P7P55D-E Pro is a nice board. For the fairly low price of $189.99 over at Newegg, you get full speed USB 3.0 and SATA 3.0. In addition to that, you also get TurboV, EPU-6, high quality audio and a few other handy features that you would normally only find in a more expensive motherboard.
Performance wise the P7P55D-E Pro was right around where it should be when compared to other P55s. There are some areas where it exceeds and others where it is behind, but again nothing major and in keeping with what we have seen from other P55 Express based motherboards. Overclocking performance was good and the inclusion of the very easy to use TurboV EVO makes the P55D-E Pro a great choice for those just getting into overclocking and those that are looking to push farther.
The P7P55D-E Pro was also easy to install and build. The layout (with a couple of exceptions) is excellent and gives a healthy amount of room for an oversized CPU cooler. The extra PCIe 2.0 x1 slots are a left over from the PLX bridge that gives the NEC USB 3.0 and Marvell SATA 3.0 controllers the bandwidth they need to operate at full speed. These slots are also handy for PCIe cards (like the Xonar or a TV tuner) that may benefit from the greater bandwidth.
ASUS has done an excellent job of balancing performance, features and price, making the P7P55D-E Pro a good choice for an "all-around" motherboard.