So far, I like the Reaper Plus a lot. I find it very easy to fill with a glass eyedropper. There is a chamber around the Coil Head with 4 juice holes in it, which is Closed to Fill and Open to Vape. It can also be used as a Juice Flow Controller. It is easy to spin and operate for Filling or Juice Flow Control. It's a very cool design. The Fill Port cover ring on top opens and closes easily for Filling. The Fill Port is wide enough that I had no issues using an eyedropper.
The juice I'm using in it is a DIY that was a gift. It is all VG except for about 7% flavoring that is PG-based, and thinned with Distilled Water. This was my first time trying it, so the Flavor ability of the Tank is hard to judge. I was given a duplicate that was thinned with 8% Everclear Pure Grain Alcohol, so I'll try it next. I've been vaping that in a Kayfun, so it will make a good comparison for Flavor.
The Air Flow from the bottom Airflow Ring is great, and it also has adjustable air on top by the Drip Tip. I haven't needed that as yet. I've been using it with the Airflow Ring all the way open. The only thing I haven't done yet is figure out how to fully disassemble the Tank for Cleaning.
I forgot to talk about the Drip Tip. The hole through it is 6mm, and the bore opens up to 8mm. Personally, I'd like to see this Stainless Tank with Clear O-Rings and a Clear Fill Port ring, but that's me. All in all, it's a great Cloud tank. I really wish a Ceramic ICC Coil Head was in the kit, though. Mine came with a Triple Parallel Coil 0.3Ω SS 316L OCC Head, and a Dual Parallel Coil 0.4Ω Kanthal OCC Head. The 0.3Ω SS 316L Head works great in TC Mode on a Mod that can handle it, too.

If you don't have one, you can vape it in VW Mode.
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