Thanks, CA. I sort of knew instictively that it would come down to making both and tasting for myself - I suppose I was looking for a shortcut that didn't really exist in the first place.
You're right to mention the base and spice mix recipes, though. I've made a couple and find that, so far, the Abdul Mohed base/spice mix suits my tastes best so far. I hadn't really given much thought to the subtleties that other combinations might make to a dish.
At the moment, it's less about the "botheration" factor than it is about the space I have available in my freezer! Ever since I embarked on this BIR journey, I'd be lucky if I could squeeze a single frozen pea into the freezer for all the tubs of base, G/G paste, bunjarra, masala, chicken tikka etc., etc.!
But I will definitely give both of your Korma recipes a go and see which tickles the tastebuds the most.