What are some fun Technic sets from the 2010s and before? With a focus on function over looks.

Just finished building the Bush Plane (42198) and I love the functions of it. I've got most every small scale technic set (below $50) from the 2020s that interested me and I love fiddling around with them. I want more but the recent offerings seem to only have things like suspension and pullbacks instead of like, things to actually do with them if that makes sense? Tryna go through brickset but I'm wondering if there's any timeless sets that I should be focusing on. Obligatory "me playing...