Seems expensive for what you're getting unless you really, really, really need to not have a fan.Rohit has a review of the Protectli FW4A as a silent pfSense box almost done. Amazon Protectli FW4A
Looks fairly good. No moving parts from the pictures.
It should be more than enough to firewall 1Gbps, definitely a lot more than 200Mbps. The only wildcard is PPPoE, which does require significant single thread performance in the freebsd implementation.While that's not a bad box, it's "only" clocked at 1.9GHz. In the OPs case, that may be sufficient as he has less than 200mbps internet, but for a faster connection (I have 1gbps symmetric), that may not be enough, depending on what you run.
Something to think about.