Ok, turns out that the store had sold the 3s. However, they had a set of zero demos and a classic 3 center demo for around half off. I brought in 3 CDs and listened to zeros, 2s and 4s for quite a while. They all sounded great. I really like the enveloping neutral sound of this brand. They seem to have a unique sense of space, almost like I could pinpoint exactly where an instrument would be, but at the same time feel completely surrounded by it. Ok, that's a little silly. The 4s naturally stood out and I was tempted to spring for them because they were marked down to $999 for a pair. But because they are so large and because NHT doesn't really recommend using them with a sub unless you buy some extra $$$ components to make sure there isn't unwanted wave canceling/ addition or some nonsense, I decided against it. NHT claims that the 4s can be used without a sub, and they probably could do a decent job, but I just didn't feel like that would be wise. They would work perfectly for me as a 2.0 music only setup, though. They sounded incredible.
I really wanted to hear some 3s, and I did have the 10" woofer of the 4s turned off a bit to simulate them, but I was told that on the 4s the 6" is capped off so it can't go as low as it will on the 3s, so they didn't sound quite right without any low frequency.
Because of this, and because of price, I debated very hard about just going with the SVS line, but after hearing and liking every model of NHT they had, I decided to order a new set of 3s, discounted slightly, and snapped up the center 3 and the set of zeros, which I tested and felt were a great deal. I got the salesman to throw in some speaker wire and give me a discount on speaker stands so in the end, it was pretty much the same as if I had gotten the 3s at demo price, plus I unexpectedly got a center 3 for only $300.
Soooo, I've gone a bit over budget, and still need a sub, but I'm pretty happy with the deal I got and hope that the 3s don't disappoint.
What do you think of me saving a little money and going with the highly rated, but smaller HSU STF-1 for $299 or the SVS PB10-NSD?