I use my DX6i for my Blade SR's, and Huey.....and thats it. The DX8 gets the rest of the workload, 230s, 450 Pro DFC, 450L, 500 Pro DFC...
i think the DX6i is a great entry level radio, and I've seen em as cheap as 75 bucks here lately for a used one. I bought mine off a guy that only used it one time, and have had it for 3 years now, had to replace the roller (got a metal one) and the button that it pushes on, added a backlight to it, but it has served me well.....still does.