Please add to this list with your own experiences.
My goal is to create a list of TG channels where the pictures can be trusted to some extent.
Unfortunately, there's no such thing as a 100%... or even 80% trustworthy channel. I'm shooting between 30 to 50%.

This pertains to not only pictures, but accuracy of other info, bad business practices, bait and switch etc.

TRUSTWORTHY:

- Honey Spa - TST - FS yes
Pictures are largely accurate, about 70%. Some are obviously photoshopped, you can ignore those.
Mamasan won't try to screw you too hard.

- Dynasty Spat - CWB - FS yes
Pictures of the 3 Venezuelan girls are 90% accurate. No serious PS, just lots of makeup. The Chinese girls are... 60% accurate. At least they're of the same person.
Mamasan is quite reliable.

- Baby Spa - TST - FS yes
Hit and miss depending on where photo was taken. Non-in-shop photos have no PS. Photos from the girls themselves are PSed to varying degrees. But they are of the same person at least.
Mamasan is reliable.

- Nuru Spa - TST - FS yes
Pictures are mostly taken inside the shop. They are not heavily PS. About 80% accurate but they almost never show face... so...
Mamasan is reliable.

- Lucky, Blue Spa, now called High Class Girls I guess (on WeChat, just search for it)
Similar to other places, if the photo was taken inside the shop, the amount of PS is moderate, mostly a massive bleach filter since they're all SEA girls.
Lots of their photos are from the girl's own social media. These are often accurate.
Mamasan will allow you to browse the goods without committing to a time. I've stopped by their shop a few times to see what's good.


UNTRUSTWORTHY

- 百合 Spa - TST - FS Yes
All photos showing face are heavily PS, not even of the same person.
Mamasan is slow to respond, doesn't give any info

- UniqueSpa - CWB - FS No
Almost everything you see on their TG is fake.
Mamasan will try to B&S you all day long

- Bitto Spa
Photos are all fake.

- No 5 Spa
Photos are all fake.

There's more, I've just forgotten.