I have used NXG a bunch, and have had good results with them. I use all Jamo now, but you can get the contractor grade Jamo for around the same price as the NXG's! They are a better sounding speaker, and they have a LIFETIME war. on them! So if you are going to get NXG, that is cool, but just get the regular NXG and not the pro and save a bunch of money.
Just remember this is more for "mood" music, and you are not going to be needing to spend a boat load of money on these. Another speaker that I have had a lot of luck with is Niles.
That is my .02 cents.