Dang, didn't know there was a dedicated SG thread here. I'm currently in the middle of re-watching all of SG-1 (and plan to segue into Atlantis after season 7), I thought Amazon Prime was supposed to pull them for MGM+ or whatever, but it's all still available so I've been taking advantage of it.
Also, kinda dumb, but I'd really like to bitch about the quality of the episodes streaming on Prime. Seasons 1-5 are about the quality of the old DVDs, they're not interlaced thankfully but they feel a tad bit more compressed. Season 6 was a massive step up in visual quality for some reason, genuinely better than the blu-rays as none of it was DNR'd to death, but holy fuck something's wrong with Season 7. The PQ is far worse than the DVDs and I swear all the audio is in mono. The different language tracks are all in stereo, but the default English audio is mono in every episode so far. Amazon claims it's 5.1 but no, it is absolutely not.