Well, I finally jumped on the Berserker band wagon.
@The Yeti was kind enough to tip me off about a website that was selling them for $13. I broke down and bought 2. It took me a bit to break them out; but about a month ago I did.
I set one up with the tall tank and the other with the short set-up. I routinely vape unflavored 90% of the time and DIY the rest. I figured the tall was fine for the unflavored and I would see how the shorty performed as a flavor rig.
I still have the original build in both. It is a 28ga.316L SS, 8 wrap (0.77Ω), 2.5 dia., rayon wicked build (same build in both). I alternate the tanks on the same mod (Hcigar Warwolf) running them in temp mode.
I love the way these sip juice. I have been wanting to move away from DTL tanks, and reduce my liquid consumption, and this has exceeded my expectations. My daily consumption has dropped from 4 to 2 mL a day.
Though I have yet to rebuild with of these, I have done a couple of burn-offs, and re-wicks, and they just keep chugging. I'm impressed.
I only have two minor disappointments:
1. Bottom filling. Like most others, I had read that this tank really needs to be bottom filled, but I still had to try. Of course, both flooded.

From there on, I bottom fill, and have never had even the slightest gurgle.

It is as simple as everyone claims. I just find non-working features (like the Berserker's "top-fill") annoying. Certainly no deal-breaker, and I even expected it; but an annoyance none the less.
2. I am not getting the intense flavor I was expecting from many of the comments I have read (based on the short set-up only). Because I have only one build in it so far; I am withholding judgement. I am hoping it is my choice of build, my build installation, my flavored juice selection, or any combination thereof.
I have read through this thread (been following it since it started), and focused on keeping the coil as close to the air inlet as possible. And, I know I still have diameter, and number of wraps to experiment with.
If anyone has suggestions, for SS/rayon builds, I would be eager to hear them.
Thank you in advance for any and all replies. And a huge thank you to ALL, for all the advise and information, that has already been contributed to this thread. You made my learning curve pretty gentle.