The primary difference in the Phase 1 units is the floor of the unit (but it's not as simple as 10,500 is first floor, 12,400 is second floor and 14,400 is top floor, there is more intermixing than that.) Phase 2, which has the traditional point grid of 7,000 and 8,400 units is a fundamentally smaller unit than Phase 1 (perhaps 15% smaller), with the same comment about higher points is higher floor.
Next time I go to the Big Island (and I hope its in 2016), I will likely stay at Kings Land in Phase 1, on the first floor. It's a 10,500 point room, the primary living area is bigger than Phase 2, and it has really better furniture outside on the patio. With respect to Phase 1, I prefer the ground floor because it's easier to access the BBQ's, even if the points were the same, so it's nice that its the lowest point value room in P1.
I
prefer Kings Land to Kohala Suites because the Super Pool is great for the kids, and I prefer Kings Land to the bigger Bay Club units because it has access to the hotel, which I really really like.
I wrote a
thread in 2012 on Kings Land and the relative room sizes. I will see if I can find it. I hope that helps.
Best,
Greg