Howdy,
When I inevitably begin my modular journey, ">Heinbach's Collide 4 will be one of my non-negotiable modules. I'm very interested in that raw, uncompromising, test equipment sound which this is built for. However, he mentions in the linked video that it may be wise to have something that saturates/overdrives nicely in the signal chain following Collide4, since it has a habit of outputting high-gain signals.
I'm also looking for a simple utility compressor for my prospective rack. Since I'm not that interested in having sprawling spaghetti monsters of various devices, I'm looking for a module that can fulfill both of these parameters at once. Preferrably on the smaller side, but I'm not set on it being sub-6 HP or anything. Oh and this should go without saying, but I'm not afraid of distortion! Feel free to recommend things that get dirty when you push them.
All the best!