The Wismec RX GEN3 Dual surely qualifies for this thread. Even if it's just another dual 18650 VW....
It just has 74 mm tall and besides a normal dual 18650 (here it's the HCigar vt167, a DNA250) seems less than dual battery powered..... And surely it costs less than 100 $.
Short atomizers fit better, unless you want, really want, to capsize your mod with a 'giant' RTA....XDDDD
But there is a downside. Even with not so big hands, some fingers are prone to get e-liquid from condensations: They cannot hide under the mod anymore!
The 'glossy black', or 'piano black' finish is a pleasure to view, but it gets dirty quickly, and the condensations seem dust (they are easily cleaned though). But the fingerprints...well, they are fully claimed by this glossy finish.
It has substituted my IPV D2 for out-and-about, and once I have upgraded it with the NFE Arctic Fox firmware and tweaked a bit its PI regulator, it runs almost like my Evolv's, which is undoubtedly a big pro....in just 74 mm tall.... (Yeah, I do vape in temperature control a lot....).
That is an image capture of NFE Tools monitor, an EScribe-like suite to monitor and modify the mod. It performs really well... even if the graphics look like a bit less detailed than Evolv's on a DNA250, the results are fully relatable, which I cannot say with the OEM firmware (sorry, Wismec, but that TC sucks!).