I'm one of the people on here who's riding a Heritage, so as roremc pointed out, I can give you some feedback. I too was going back and forth on what board to get this year, and the Premier F1 was on the list with the Captia BSOD, Rome Anthem SS, Jones Mountain Twin or Flagship, and the Heritage. I decided I was going with NS because they have an amazing reputation and a 3 year warranty. So my decision then came down to what terrain and conditions I mostly ride, and the Heritage edged out the F1 based on the fact that while I ride steep terrain and trees almost exclusively, I do so at resorts (I have a pass at Mammoth, and typically make a yearly trek to CO resorts like Breck, Copper, and Wolf Creek).
I just rode this weekend at June and Mammoth (most snow in the world right now according to the web), and the Heritage was really impressive. I took it through (really) tight trees which had waist-deep powder, and it felt so easy to turn and float that I found myself taking lines I wouldn't have considered before on my traditional cambered board (a 2007 Rossi Jones Experience). I also hiked to some steeper and deeper sections (Hemlock Bowls and Dragon's Tail at Mammoth, and Upper Carson and some out of bounds at June), and never felt like I was undergunned, even in a foot + of fresh pow on a couple of days. My concerns before I bought it were that the board wouldn't be stiff enough to hold at speed and would wash when I was straight-lining on groomers. I can say the board stuck a line like nothing I've ever ridden. Plus, when I was riding less steep groomers with my girlfriend, the Heritage felt super playful and loose, which made riding switch really fun. Basically, the RC Tech really makes the board feel like two boards in one. I don't ride park much these days, but I did hit some natural features (wind lips and small rock drops), and the board has good pop. I rode with my stance set back so I had about 2" of more nose than tail, and I never got leg burn or buried the nose. And that was in knee to waist deep powder, and making fresh tracks. With that same stance, riding switch felt easy, even in the left over pow on the side of the groomers and in the open trees.
Just for reference, I'm 5'11", 170 lbs, and 10.5 boots, and got the 158. I've been riding for 17 years, and would consider myself an advanced rider. I will say, if I was exclusively riding bigger mountains like Jackson Hole or Whistler, or if I was hiking backcountry more often, I would have gone with the F1. But for riding anything and everything, the Heritage has been perfect.