Hey guys, quick question.

I have a server running on an RPi that has two main jobs. Firstly, it host an incredibly simple website that is just a bunch of file indexing with University textbooks for me and my friends. Secondly, it hosts an SMB server on the internal server so it can serve up PS2 games from the harddrive.

Unfortunately, the latter task is way beyond the Pis capabilities. The games are slow to load and freeze frequently. On researching, it turns out the Pi doesn't have Gigabit Ethernet, and has Ethernet and USB share the same bus. Is there a decent replacement, or am I looking at a 'regular' motherboard and just making a server? I've seen the Banana Pi and the Orange Pi Plus has Gigabit Ethernet, would either of these be up to the task? Basically, what's the cheapest thing I can get to maximise network throughput?

EDIT: Also buying a Banana Pi does not seem like an easy task all the websites looks sketchy as.