I had a PC Engines board for awhile and I really liked it, but make sure the one you order can support your internet bandwidth. When I upgraded to 1 gig internet, I was pulling around 450mbps on my PC Engines apu1d4. I ended up getting a Ubiquiti Unifi Secure Gateway and then I was able to pull the full 1 gig.

It's pretty hard to recommend Unifi based on how they handled this breach, but the hardware itself has performed very well. Hopefully the new PC Engines boards can accommodate your needs.