I can't speak for the optima but from what I have heard they do have a quieter receive than a 2950. I have owned several 2950/70s through the years and NEVER had a frequency drift issue with any of them.Too bad the 2950s only do 25w ssb, you get 50 out of the optima and they are right around the same price. Not to mention the optima has better filtering and the 2950 is known for frequency drift issues.