I have used a lot of different RTAs, including the Serpent SMM and Kensei. Although the latter is on my regular rotation, the OBS 2 is just amazing. I did get the coil position wrong on my first attempt. But on the second, I made sure the coils were sitting low and as far towards the airflow ridge as possible. Did this and the flavour popped!
The whole tank is fiddly, but that's why I bought it - I found building on this rta fun and will continue to find it just as fun. The draw is tighter than most, but not restrictive in terms of flavour. It's a smooth draw and doesn't produce a lot of cloud, which is perfect when I'm out in public.
The flavour is amazing. Had my Donut King in the first time and it was like I was drinking the eliquid - just amazing. Another thing I love about this rta and I think it's because of it's top airflow is this rta doesn't produce spitback like ALL my previous rtas, including the two aforementioned. And of course, no leaking which again, suits me when I put it in my bag!
When I get a silver mod, I will defo buy the silver one. Although the black one is my favourite! Just a great rta!