Hey Andy I have the dx18 for years than the DX20 for very short period and than I sold it to use the 18 back they about the same but I just can’t use the slides on the DX20 and want some money back, but now I have the new is20 and I do like the radio a lot this is well done product definitely much better than the other brands at least for me , there so much new features and possibilities no other product will give it to you so go ahead and buy one you will like it a lot and no need to change all the rx’s .