Nothing can come between Sam and her laptop. Except perhaps Sam's P-90.
I liked the Sam and Cam dynamic, although I never saw it as anything more than friends and service buddies. There was a nice, relaxed vibe between them, unlike ... yeah, well, you know where I'm going with this.
Interesting points about the difference in Sam and Jack's leadership styles. I never watched SGA and I'm not enough of a Sam fan for her transfer to the series to drag me over to watch, so I really can't comment on her leadership skills.
But Jack was clearly the boss. He was written that way from the start, whereas Sam rose through the ranks; maybe that affects how you are with those with whom you were once on a par and colours your leadership style. Jack was always in charge of his team. His role was clearly delineated. (Yes, I know Jack must have risen through the ranks, too, but we never saw that. We were presented with him as Colonel. Sam had to get there as the show progressed).
And, regarding the power balance issue, Jack was Sam's boss. He never stopped being Sam's boss, even if/when (I'm not convinced) he was out of her CoC. It was never a meeting of equals, even though I'm sure they respected each other's professional abilities. It was a nice non-shippy moment between them in SGU over the loss of the pilots; Jack understood and empathised. Professional chemistry and understanding? Yes. Personal? ... never saw it.