DMSPL

It's a top contender for not just Soft Onaholes but also Dual Layers. It is very well made and feels great. There is no worry of tearing into the Outer Layer from the inside. A typical problem with Dual Layers I see is that the Inner Layer is too thin for the material's firmness / durability, so it very quickly tears into the Outer Layer. While this is an extremely soft Inner Layer, it is very thick to make up for it.

It is also a winning combination of materials. While the Pink is versatile and great for both Interior and Exterior, the White makes for an especially great Interior while having a cumbersome or even gross Exterior, due to how soft it is.

While I have not used the similarly released Nurse one by Ride, I would recommend it as well just based on design principles.

I really like this lube. I mostly bought it for the nozzle and to try Ag+ lubes, but now I want more of the lube. While thin lubes wash off easier than thicker lubes, I feel there is something about this that makes it wash off better than just the viscosity. Nothing I've used before comes close. I'm curious about the ingredients.

As for versatility with it being thin, I've enjoyed it with almost all that I've tried. Aside from being great for Soft, It works well enough on Hard onaholes as long the textures are smoother. I would not recommend it at all for Hard onaholes that have rough textures.

The nozzle is great for lubing tighter tunnels, and also anything that you feel like lubing heavily, whether it's just the mood or like some of those uterus ones that suck up lots of lube into the back.

I can't really make any comments on Ag+ yet, but bought more lubes with it to try.

It is soft and robustly elastic. The material feels incredibly nice to touch after powdering. It is a very simple "less is more" style of tunnel design. If you have any sensitivity issue, I highly recommend this type of Onahole over brute forcing the hard stuff regularly.

I did not like this the first time I used it. The entrance past the labia is very dense, to the point of feeling quite rubbery at the material firmness it has at room temperature. It was also a shorter session the first time and felt it was not elastic enough for how short the tunnel is. Trying it more when I can take my time, I noticed as it naturally warms up that it softens up quite a bit and becomes much stretchier. While I am not familiar with USB warmers, I think maybe it would take away from the experience. I recommend a thicker lube and taking your time with it.

I recommend as thick of a lube as possible. I used too thin of lube and the teeth were a bit abrasive. I was not eager to try again with more appropriate lube.
I think the 'Super Gal Rich Thick Blow' is a much better buy for tightness, but perhaps not if you want hard teeth.