Sorry just went by the RRR/R4 parts.

1evo RRR Driver in no way I'm picking on you just want to say some of the less good things on the Xray.
The NT1 has been practicaly the same since it came out in 2007,since then the low rotational mass is now standard across all cars on market,slim chassis plates,low upper decks,small clutches,and so on...The NT1 is actually the only one that needs the removal of the middle shaft for front belt changes,even the G4 didn't need that.
A couple months ago I tought about buying a NT1,but after seeing how they run compared with the RRR and how much parts costs the conclusion was simple,I'm staying with my RRR.If you can live with the NT1,I'll have no hard feelings and good luck to you.