I don't know any except my subjective experience with Xpra and pure X forwarding. Xpra was a little cumbersome to setup and use. Some programs benefited a lot f

I don't know any except my subjective experience with Xpra and pure X forwarding. Xpra was a little cumbersome to setup and use. Some programs benefited a lot from using it (Firefox), some actually got less responsive (Geany). This was roughly one year ago, so it's possible Xpra got better since then.