I can relate to you about the NeoAir and it's price tag keeping it out of reach. I also camp year round, so I needed a few solutions for pads.
What I ended up doing was first going with your standard foam pad (cost about 7-8 bucks, 350g) combined with a space blanket ground cover (3 bucks, 50g). This works pretty well for me around late spring-early fall (and when it is really warm in the summer, no pad at all, but this is rare).
But I needed something with serious insulation for the winter, so I opted for a Big Agnes IAC, and I can say it is quite warm, easy to use and pack, and the weight is not so bad (mine is a mummy and clocks in slightly over 600g). With more insulation comes more weight, though I have read a lot of good things about the NeoAir, which somehow might be as warm as other heavier pads...
But then there is another issue of comfort, which is subjective and different for us all. I noticed that I sleep better on foam pads and self-inflating pads than inflatable ones. My body just likes firm I guess. So I recently ordered a Pacific Outdoor Peak Oyl Lite (regular) that is 540g (got it with a discount for 68 bucks). This is what I will use in spring and fall, and perhaps in winter I will combine this with either a foam pad, we'll see how it goes. If I am just as warm or warmer with the Peak Oyl Lite (with or without used together with foam pad), then I may sell the BA pad. But if the warmth is not as good as my BA pad, then I will keep it for winter use (I have used it in -10C before and slept fine and was warm).
What I would love to know from someone who has tried both is: in the middle of winter, which one is warmer/more comfy, a NeoAir or a Big Agnes IAC?