If you’re going to go eurorack drums I don’t really see why you’d want to go with all in one drums modules like LXR and QoP other than being cost effective, but what you are going for there is basically a smaller machinedrum and a 909. I think if you are going to go the eurorack route you should consider individual drum voices cause then you could switch things out and also get a mixture of analog and digital. I’d rather have 5 good drum modules that I use all the time instead of more drums that are less flexible. I’ve had 168hp+ of all drum modules and can function with as little as 6hp (2x pico drums) and have done so many times.
To echo a big point is modulation on drums. To be honest, depending on the music you make, really you wont be doing much modulation. Techno not much at all, at least to be functional and unique, but in my experience with IDM something like BIA is a lot of fun to extract many sounds out of in a linear drumming sequence (linear drumming being only 1 drum hit at a time and morphing those sounds as opposed to many drums at the same time). So depends on what you want to make.
If you think about the 909 the kick, snare, clap, and toms are analog and the hats and cymbals are samples. In techno I rarely use a snare and toms are fun, but not totally necessary. So I run a Jomox modbase09mkii, an analog clap either erica or tiptop, and either erica hats and cymbals or 2 pico drums and that’s a great sounding 909 with plenty of range and sound changes to work with plus patch points.
I’m interested to hear what you end up doing.
