We're looking at adding an RDS encoder to be updated dynamically. I'm assuming we'll be scrolling text. Are all of the current units in production (encoders and radios) limited to a maximum of 8 characters at a time?We're looking at an Inovonics unit because we've always had outstanding service from them in the past. Are there any stand-out units being produced, or do they all pretty much do the same thing? ???