Both rackets are 100 square inches. Both have about same head lightness. RDS 003 is advertised as 12 points head light--which is not the case. It's closer to NSRQ's 6-7 points HL. RDS 003 is a little stiffer and has 27.25 length compared to NSRQ's 27.5. I think the NSRQ's 27.5 length is a bit cumbersome on some shots. The RDS 003 doesn't feel that way. The 003 has the thicker beam is some areas and is maybe a tad less maneuverable but still very good. The NSRQ-7 has a bit better access to topspin but does not volley as well as the 003, nor does it serve as well, in my opinion. Both are very good for slice. I think the RDS 003 gets the nod for flat hits. It feels a bit more stable overall. What do others think? They are both excellent sticks--I think the best Yonex has ever made.