I have had the Russian 91% for some time now and picked up a KFL+ today from my local vapor store.
I do like the KFL+ but not near as much as my Russian 91%. The included drip tip with the o-ring set up just wiggles like a loose tooth in the connection for it. All 3 examples the store had did this. I don't know why they didn't put the threaded channel and adapter sleeve on this. Also the airflow control is a sick joke. On mine the draw was super tight, I had to take the airflow screw out and lost it already because it's so damn small. Turns out I ran some wire up the air channel and there was a blockage I cleared out. Now with the airflow totally open it was too light so I had to use my spare airflow screw which was a bit of a chore to get back in with that tiny screw.
I can't really adjust the airflow how I'd like because that airflow screw sticks out when loosening the draw and my tank sits totally flush on my vanilla mod, so it's either slightly too tight or take out the screw and way too light of a draw. Really a poor design IMHO. Especially with flush fitting mods being so popular.
Just to nitpick, the KFL+ cost me a good bit more than my Russian 91% but you'd never know it from the boxing and accessories! The Russian came with a slick, very well thought out box that had a much better presentation and the mini screw driver included and tons of extra parts. The KFL+ came in a simple cheap box with a baggie of one extra set of screws and o-rings.
svoemesto is the originator of the design, but the Russian is doing in better for less money I'm sorry to say.
does your russian 91% or KFL+ whistle when you draw in air?










