RT AC68U or RT AC88U

Hi, have just discovered this forum over the last few days and it is great. I was wondering if I could get some advice. Have a home office with 7 wired computers, NAS, smart TVs - all ethernet connected and 4 phones and tablets wireless. Big files mainly run over the ethernet, wireless is good for me but not the ultimate decider. One computer does a fair bit of torrenting and also runs a VPN through PIA. I have adsl2 at 18mb.

I have read plenty here comparing these two routers and see the...

RT AC68U or RT AC88U