Trichocereus ID

[Transform]

Could anyone help me confirm which of these are mescaline-containing cacti? I'm looking for some second-hand cuttings but I don't yet know how to tell apart those that contain mescaline from those that don't (I'm aware mescaline-containing species may still be very weak, that's a different issue).

First one looks more like a Myrtillocactus geometrizans or maybe a Stenocereus, but a few close-ups would help with that ID. Either way, not worth sacrificing. The other 3 pics look promising enough, albeit with the low-res pics making it a bit harder to comment further.

 

[Trichocereus.Rex]

Could anyone help me confirm which of these are mescaline-containing cacti? I'm looking for some second-hand cuttings but I don't yet know how to tell apart those that contain mescaline from those that don't (I'm aware mescaline-containing species may still be very weak, that's a different issue).

First one look. Like myrtillo cactus, not active. The other pictures look like a mix of active species

 

[blig-blug]

First one looks more like a Myrtillocactus geometrizans or maybe a Stenocereus, but a few close-ups would help with that ID.

First one look. Like myrtillo cactus, not active

Is it because the ribs are more angular and less pronounced? It did look weird to me, but as there's so much variation I'm never sure.
Those pictures are all their current owners provide. I won't risk it with that first one.

I'll try my luck with a couple of the other ones as they're being offered cheap, worst case I'll have ornamental cacti

 

[Transform]

Is it because the ribs are more angular and less pronounced?

Spination is also different and distinctive - trigonal, black and of a somehow characteristic appearance. The areoles and spacing thereof also contribute to the impression.

The angular ribs are another sign, along with the glaucous appearance.

Still a nice specimen, and also looks like it has a somewhat unusual 4-ribbed growth habit, so it would be tempting to me for that reason alone.

 

[Trichocereus.Rex]

I agree it's most obvious in the spines.

 

[blig-blug]

Would you say this is consistent with T. bridgesii (again, low quality picture)? The bluish one in the middle. It seems so to me. The owner cut the spines, so that's why there are only a few.