I haven't seen SMT's reply yet, so I'll chime in with mine 
 
Flavour:
Until I got the Dvarw, the Tripod RTA was definitely my best flavour RTA. Flavourwise, the Dvarw equals it in every way. They both smother you with flavour
Ease of everyday use: The Dvarw sneaks ahead here. Purely due to it being bottom fill, so there's no JFC. And you don't have to line up arrows to remove the deck. The 6ml capacity of the Dvarw beats the Tripod's 2ml (3.5ml with the extension)
Building: Both are pretty similar here, easy to stick in a coil and easy to wick.
Airflow: Tripod can range from a gnat's butthole (0.8mm id MTL insert) to loose MTL (1.8mm id). Take out the inserts, and it can go from very airy MTL through to RDL. Which can all be dialled down further with the airflow control ring.
Dvarw:
Inserts are your only option. Huge range of them for the MTL version, and for the DL version (including FL) you can go from an airy MTL (2.5mm id through to a 4.5mm id very airy RDL