I added the build lists, but can't add it all in one post.
So the JP SCS system is nice, however I think it's too heavy and over sprung for light competition loads. Though you can change all this if you want to buy the weights and springs
In the Budget gun I have the Kaw valley 9mm buffer which is heavy and the 308 carbine spring that comes in their kit. Runs good, also tried a tungsten h2 buffer with normal carbine spring and it runs well too. I have the hydraulic buffer to test soon too.
The budget gun does bounce a lot more then the High-End build, it's a lighter weight gun with no comp. I think with a decent comp and some ammo tuning I can work that out though.
I cannot say enough good things about the HIPERFIRE triggers, they are just excellent! If you don't want to spend $200+ get the EDT or EDT2 trigger and you'll be very happy. I really like how the trigger isn't flat and isn't as round as a mil-spec. It's right in between with a good flat across the front which I really like. That's one thing I don't like about the Rise Armament triggers is the rounded trigger bow, though they are a solid trigger for the money.