I just watched the cool video with Alessandro Cortini the synth master from NIN and he has a very expensive impressive cave of gear!

He has tons of Buchla and vintage synths. What would be a good setup for me to get to learn and not go broke to get those sounds? Right now I have an Elektron Octatrack, Elektron Analog 4 and Make Noise 0-coast that do sampling/sequencing and some basic patches. Looking to expand this on a budget that won't cost me a fortune.