I just got a second RSST for a backup today (from the same vendor) and it looks as if they may have changed the tank. Don't know what the new material is, but it's now a milky white color instead of the frosted.

I was using a known tank-cracker DIY combo in the original one (spearmint/green tea/green apple), but I'm not sure this one isn't a tank-cracker so I'll just stick with safe juices in it.
The ming drip tip is now more brushed than the original (I intentionally scuffed up the cap on my original because I slipped when trying to enlarge my air hole).

I was using a known tank-cracker DIY combo in the original one (spearmint/green tea/green apple), but I'm not sure this one isn't a tank-cracker so I'll just stick with safe juices in it.
The ming drip tip is now more brushed than the original (I intentionally scuffed up the cap on my original because I slipped when trying to enlarge my air hole).