I like both colours, but if you want a bit of a plum colour in it, then go for Dark Lava. Also, if you have any of the additives effects you can get some lovely variations on it. I'm trying Dark Lava today with the pink gold effects on the top.
I tried the pink gold effects on top of one coat of sugared spice yesterday and it looked lovely.
Dark Lava does look beautiful and if I had the choice between the two now I would buy that, but I only have Fedora, so can't compare I'm afraid.
When I get the chance though, I'm going to do a pop with Gold VIP over it to see how it looks and then see if I need to buy Dark Lava too.
Don't get me wrong, I love Fedora too, infact I wore this with white spots of cream puff on the top a little while ago and had lots of comments from strangers.
Iv'e also layered it with Iced Coral, gives a beautiful green.
I'd probably choose dark lava, but both are quite different tbh. DL is a beautiful dark plum with a nice subtle shimmer. One of my clients has gone for this 2 appointments running and said shes never had so many compliments. On the other hand fedora a dark brownie red is a beautiful rich creme that i love.
As said if i have to choose dark lava especially with the holiday season coming up, but really if you can get both i'd do it lovey