I'd deffinatly say static. I hate the random system and don't think it's a fare way to reward people at all. Having a person get a great augment after 1 try while you never get it after 50+ tries is so disheartening.
Also, if making them static means it'll take longer to get I don't think it's a bad thing. I'm getting a bit bored of the game right now and everything can be got fast and that's with almost no effort. Having something to focus on that might take a while and give you a guarenteed reward would be great! So yeah, static deffinatly.
