Most of the radios today have a similar "feel"; after all, they're just a square box with two control sticks on top. The "brown box" has more squared off edges and corners then the newer stuff though. It gets more complicated when you get into higher funtion radios, as switches and knobs may be placed where it's inconvenient to reach them, and some even seem downright counter-intuitive.

On the lower end stuff, don't worry about it.
Dennis-