IP35-E isn't perfect. There are two major issues plaguing some boards:
-Bad solder joints at SATA ports. If they don't come off, then board is fine.
-Cool boot issue below 63F if you have a defective surface mount transistor at the upper top of the board. You can apply an ice pack to the affected area and check for POST problem.
The core design of the IP35-E power section is very similar to IP35 Pro. At the current $90 price, IP35-E is no longer a great value.