@Jill NYC
I should have check my alerts, I just posted in the Tinymight thread lol. Here's a copy paste from that thread.
Here's my current lineup of Tinymight stems. Starting from the left:
RBT 19mm Short Stem
Grav Labs 3" Upline Taster
Tinymight Official 80mm Long Stem
Tinymight Official 55mm Short Stem
Airistech Herbva Bubbler
I've said it before and it still stands that the Grav Labs stem is my favourite stem when going dry. This all comes down to the shape of the mouthpiece that is not only smaller but also oval so it sits perfectly on your lips. The cooling affects (because of the loss of the cooling unit) "may" not be as good as either original stem but that I haven't noticed a big difference and the feel of the Grav just makes it that much better for me. There is no adjustable bowl like the stock stems but the longer I've had my Tinymight the less I pack huge loads anyways (only when going for a walk if I don't want to change stems will I load 0.5g in the 80mm stem).
The stock stems are both really good but because I generally draw long and hard with short breaks the long stem is preferred because the short stem can start to get pretty toasty. Taking a short break between puffs will negate this so it's easy to use the short stem if you don't rush. The Grav Labs stem is worse for getting hot so I'll either cycle stems or give them a minute to cool down between sessions. There is a little more cooling with the long stem because of the extra glass. Being able to pack large loads is also a plus but again I'm finding smaller (same depth as internal stem width) loads are preferred.
The Airistech Bubbler (which I posted a video of earlier in the thread) works much better in theory. In use there usually either isn't enough water to make a difference or there's too much and you get splash back. I honestly haven't given that much effort to using it but it was cheap and I'll revisit sometime to see if it's any better.
The only time I use the RBT stem dry is when I place it in a simple j-hook I have otherwise I use it with a hydratube or bong filled with water.