As a user of the T7XC (stickversion of the 7PX) I have no complains. If you already have some futaba receivers you will safe a lot of costs by getting the 7PXR, keep in mind the Sanwa receivers are more expensive.

One thing Sanwa is for sure beteer with is the SSR support. More brands have servo's and ESC's supporting this protocol while with Futaba its SR protocol it is hard to find other options than only Futaba.