2 Roamio Basics or 1 Roamio Plus?

I'm getting close to pulling the trigger on switching from DirecTV to Time Warner Cable and going with all new Tivo equipment. I'm researching the Roamio basic vs plus and wanted to make sure I am not missing anything. The base hardware on the 2 units is the same right? Same processor, same speed, etc? "Important" features the basic is missing are 2 tuners, a smaller hard drive, built-in MoCA, gigabit ethernet. Normally I'd say go for the plus but with the Tivo summer sale on the refurb basic Roamio with lifetime for $400 total it's a tough call. I could get 2 Roamio basics with lifetime for much less than 1 Roamio Plus with lifetime plus a Mini. This would be a tougher decision if Spherular still had codes available making the prices more comparable. So I'm kind of torn. 2 basic Roamios would give me more tuners. I can upgrade hard drives easily myself. I don't really see myself using streaming so that is not a big deal to me. If I change my mind I can add it later. The gigabit ethernet also seems like a non-issue to me. Is there anything to be gained by having gigabit on the Roamio other than slightly faster transfers? Day to day usage of the DVR and Minis would not be impacted by ethernet speed at all would it?