What aged rum for mojito blend?

Hi all, just wanted to pose something. I'm currently working on a craft mojito, something that has depth and complexity, while still hitting the notes of a traditional classic mojito and keeping the right balance of flavours. It also has to be cost effective, so nothing too pricey. I haven't found a white rum yet that hits all of these notes, the one I'm currently working with is Plantation 3* which is beautifully smooth with a hint of warmth and island aromas. The trouble is it just isn't punchy enough to deliver a few layers of depth and complexity. And with a mojito, you can't do much with lime, mint and sugar (though I am using 50/50 white and demerara sugar for a bit more flavour profile). I want to craft a great mojito with some amazing layers and complexity, but unless there's some random component I haven't thought of mixing in, the only way to do this is with the rum. A good mojito should be predominantly clean, so white rum needs to be the pillar and I'm fairly happy with plantation 3* white rum for this. What I'm thinking of, is pairing it 3:1 with some sort of aged or darker rum (or a stronger, punchier white rum) to give the mojito a bit more character, without losing the essence of the drink, just introducing a few delayed flavour notes and layers. Can anyone suggest a good moderately priced rum that might pair well with this? Havana club Especial works quite nicely but I want to stay away from big global brands, go for something a bit more boutiquey and craft. I've ordered some Plantation OFTD, some Pussers blue and Worlds end Dark blend to try, but would be keen to hear if anyone has some thoughts based on their experiences of a good rum I could try?