Donnie,
If you want an upgrade, then I would recommend going with a Bubble Blaster pump instead. It is twice the price of an Aquatrance but it draws more water and air. It will mean a significant upgrade to your current skimmer.
The Bubble Blaster draws 150GPH while the AQ draws 92GPH
The Bubble Blaster draws 540 L/H of air while the AQ draws 420 L/H.
Since you have the NWB-110, you would not need to purchase any adapter parts. It will fit right out of the box.
http://www.coralvue.com/reef-octopus-bubble-blaster-1000-skimmer-pump
By going the Bubble Blaster route, you would gain a substantial upgrade on your current skimmer without having to purchase an entire skimmer.
BTW, the pump also comes with a 3-year warranty!
Hope this helps!
Carlos
CoralVue