Ok. I'll make posts about them in chunks.
First, let's go over the 348NTR series. This is the most prolific series, with 71 videos as of now, and the general premise seems to be (I've never cared enough to fully dissect the opening of one of these) that a couple gets approached to do a JAV scene, and the boyfriend accepts, and they all go to a hotel room and film it. I'm not sure if he requests it or not usually, but in most of them the boyfriend is NOT into it. He'll just mope around, look away, some even cover their face with a pillow like they've made a huge mistake. Those are instantly disqualified as NTS for me. In some the girl completely seems to forget the boyfriend exists, and I tend to disqualify those too. Also, because the genre is still so confused with NTR, the writers can't help themselves and after episode 10 or so, it becomes the standard that the girl has a secret bathroom fuck with the bull at the end where he cums inside. I personally choose to ignore this, since the rest of it can still be pretty solid, but I figured I'd mention it.
Onto the actual list. These are the ones I personally thought were worth mentioning, your list may be different. I will mark with an asterisk the ones I especially like.
348NTR-001 - Solid first release. Nice hand-holding.
348NTR-002 - Similar to 1. More poses leaning on BF.
348NTR-005 - A bit weaker, but still has some of the main solid elements. The BF cleaning the cum off her at the end is nice.
348NTR-009 - Unusual in that it is shot in 2 days, the first being a scene where she gives the BF a blowjob. I guess to warm her up to the idea of doing sex stuff on camera. Also, unusual in that she does some 3P stuff with 2 other guys.
*348NTR-010 - I like the actress in this one, and that the BF actually takes his pants off and strokes it to her near the end.
How's that? Want me to make more of these?