No ones opinion but the person buying matters. It's all about comfort. I started with a KO Helios and have a Futaba 4PK now. In my hand, the 4PK feels natural (I use a drop down), but to others, it is not. All of the radios mentioned work faster then most humans can process, so the only actual concerns are the feel of the radio (number 1 in my book), and cost of receivers.