So after a few ml through it I'd say it vapes very similarly to the MD rta.
Jjust with more control over the tightness of the draw.
The best way to describe the draw is restrictive.
Thought I'd prefer the 2x1mm airflow insert but found it just a bit too tight. The 1.4mm insert is spot on though.
Airflow seems smooth enough but you can get a very slight whistle when you start closing off the airflow below half way, depending on how hard you're pulling.
It certainly can't get as open a draw as the MD rta, so this is a mtl tank only.
I'd also say it seems like a slightly warmer vape than the MD rta?
The top cap can be a p.i.t.a when taking the tank on/off a mod or rebuilding it.
For refilling it's handy, although you're better to hold the glass when turning the cap to close or it could loosen the tank on your mod slightly.
When building I'd suggest a 2.5mm coil. Haven't tried the supplied 2.5mm claptons.
I've started with a 3mm one & it wouldn't wick propely until I thinned it out a bit ( this is with a 70pg mix too ).
Will switch to a 2.5mm coil tomorrow & see how it goes.
And lastly I've had no problems with leaking. Top of my mod is dry after 2 tanks through it.
I'll check it in the morning after it's been sitting full all night.