Significant improvements from DIR-655?

[jasjoh]

I'm currently leveraging a DLink DIR-655 as an AP for a AT&T UVerse NVG515 Modem/Router. I get sufficient signal strength through this method, but the signal quality (according to a Cisco device) is very poor and my guess is that it's due to the large amount of traffic in the 2.5Ghz space. Given that the DIR-655 is nearing EOL (if not already), will I see significant improvement in signal quality by moving to the RT-N66U?

My adapters are:
(1) Netgear WNA3100
(2) DLink DWA-160

If I need to upgrade my adapters, I'm perfectly fine with that.

 

[KevTech]

If the plan was to put both of these adapters on the 5GHz radio you are half way there.

The Netgear does not support 5GHz but the Dlink does.