I had converted my JR XP7202 to 2.4 GHz from 72 MHz by using the RF from a Spektrum DS9 module. It worked fine using a Spektrum AR7000.
I purchased the FrSky DIY RF module and 8 channel receiver thinking that it would be better since the FrSky has frequency hopping and the Spektrum is DSM2, which in a review on RC Model Reviews indicated that the two frequencies chosen could be so close that they could both be "wiped out" with an outside source.
However, on my second day of flying on the second flight, I lost control of the plane (Parkzone Trojan T-28D). I thought that it was due to winds causing the plane to balloon up and stall. It landed upright and with minor damage. So I repaired the plane and took it out today. The first flight was fine, but on the second flight I could not roll the plane to the left. I lost control and it flew away. I searched the area were I last saw it (trees near an apartment complex). Could not find it in the trees or anywhere around the complex.
So I am not very impressed with the FrSky system. I had flown the 7202 for a couple of months with the AR7000 and never had any radio problem. Three day of flying with the FrSky and I had two days of radio problems with the loss of an aircraft.