GO FOR THE NCORE NC400!! You not be sorry!
There are many people who have both and feel the Ncore NC400 is more then worth the difference in price.
I understand you are trying to stay within a budget but I would recommend from my experience with an Ncore NC400 the following;
1)go mono blocks
2)USE a VERY good case and DO NOT go too small, leave yourself some room on the back so your cabling is not on top of each other, AND...
3)VERY good VIBRATION footers...(Stillpoints Ultra Mini in a three point config should do or a really good set of brass Audiopoints)
4)VERY good binding posts, XLR, and power inlet.
5)It is a true balanced amp so running a longer XLR cable is fine, within reason.
Other then the footers most of the above is NOT that much more then decent parts and is worth it on an amp of this quality in sound. Sound wise it will pay you back, assuming you have the system or are planning to have, that can take advantage of the sound.
Also it is designed to be an easy assembly.
Good luck.