MMM, Kona.
echo3alpha, there's nothing wrong with using a popper. The reason I upgraded to the best air roaster available was for several reasons.
1) Poppers are hard to control roasts. This won't matter to you, but after a while, I wanted to be able to control it more, namely slow it down.
2) Capacity. My old popper could only handle 80g. I use 56g in 1 pot of coffee. That means I had to do 4 batches to get 1 weeks worth of coffee. With the new machine, I do 2 batches.
3) smoke and chaffe. The new machine has a vent attachment that I hooked dryer hose to and vent the exhaust out a window. It also has a builtin chaffee collecting unit. So, I can roast indoors comfortably.
There is nothing wrong with using a popper. You may never out grow it. In fact, there are several people who have used variacs, dimmer switches, and multiple thermometers to modify a popper to become the best roasters you can ever hope to find.