Doggy is definitively worth a try. I was pretty disappointed for a some time and posted in doggy thread about extremely tight draw , muted flavor, problems with installing coil legs...etc.... after many attempts I overcome most of challenges but one that bothered me the most was extremely tight draw...tighter than my Nautilus2 with 2 AF holes open... I was even thinking about drilling bigger hole under coil... Well, I found reason... it is very embarrassing but I disclose it in Doggy thread... now I can enjoy doggy with similar draw my Nautilus2 provide me with much better flavor...
Yesterday I tried for the first time Dvarw with 2ml tank and today I tried 5ml tank and can say that I do not see any substantial difference in flavor... it is as good as doggy provide... I am not sure how thirsty Dvarw is (it prbably depends which AF insert you will install) but so far I try 2.5mm and is less thirsty than my Siren2... I suspect if you instal 1.5mm or smaller insert it will be the same juice miser as doggy is but with 1.5 ml bigger juice capacity...
For me tanks with bigger juice capacity do not have any special appeal... I prefer smaller tanks... that is why I bought optional 2 ml Dvarw tank... if Dvarw would not come as standard with 5 ml tank for sure I would not buy optional 5 ml ml tank... it is boring for me vape the same flavor all day... and changing tank takes less than half minute... filling it less than minute.