I have the 05 Hyperlite State 145. I got it because its a bigger board for a bigger rider, like me. It also has an add'l channel for more control on your toeside edge.
Jumps werent a problem on my old board, but when landing it felt like I was sinking. I got the State & landings are much easier. I have progressed really quick with this board, FS/BS/W2W, W2W 180's, surface 180's. I recently started riding a buddys 0'brien Player 143, & I'm liking that one a little better.
It seems to take more work to do some things on the Hyperlite because its bigger & wider.
Overall, I would say the 145 is better for heavier/taller riders, but if your good it doesnt matter what you ride. Its definatley a good board to add to your arsenal.