By long, I mean 27.5" or 28" in length. I've played with a few long frames, including the RDTi50 long, IPrestige XL, RDTi70 long, Pro Extreme FT (27.5 ?), Pro RD70 long (28"). Out of all these, the best was the RDTi70 long, followed by the IPrestige XL. I actually prefer the extended length for serve and groundstrokes, but a couple of the frames felt unwieldy for volleying, such as the Ti50 and Pro RD70 long. 28" is a bit too much length in my opinion. The IPrestige XL actually played better than the mid. I'm predicting that Yonex will come out with a long version of the RDX500 as they did with the MP tour1 and I'm looking forward to it.