Both boards are good, difference being the Deluxe is a 1st gen P55 and does not feature usb3 and sata3.
The E-PRO is a new design and features all the latest tech.
And as far as Newegg reviews go, i take them with a grain of salt.
Every manufacturer releases the odd defective product.
Asus and Gigabyte are considered the most reputable mobo companies.
However Gigabyte has nothing currently available to compete with the E-PRO.
I have a P55 rig which i built 6 months ago sans usb3 and sata3.
If i were to build today i would buy the E-PRO.
I think most other members would probably agree with me on this mobo recommendation.
Wait for more responses if that makes you feel more confident.