Hi, John:
I would say, a resounding yes based on my experience. I owned the Audience 70s for two years and moved to the 1.3SEs. From top to bottom, the 1.3SEs are superior performers in every way. I also had the Audience center (120C) and decided it was not necessary with the 1.3s. You might use your center for a while and experiment with it.
I agree with others that the Audience line offers an excellent value compared to the Contours. Check the used listings here and you can find near mint examples for 40% off and better which certainly helps the wallet.:)
Cheers,
Jet