I don't make acid anymore but have alot of friends who do
This is my experience and opinion:
Get the moog slim phatty.
Can't even explain how acid this machine can get.
Also it delivers the finest subs!
I also used to do alot with the korg ESX, this can get pretty spacy too. Same story for the minilogue and even more for the monologue. the roland tb-3 also has other sounds than just acid, might look into that one too. the korg volca keys? Listen to the demo's, it's more acid than you'd expect it to be, I find this a Holy Grail when it comes to acid-like sequences.
Also the Elektron Analog Four is a monster when it comes to synths, no matter what style you want.
Also had the doepfer dark energy II, this is a beast when you mod a glide to it.
The circuit will also do just fine.
It's the person behind it & what you do after the original sound that counts the most.
You can use basicly anything that has a good filter (lowpass or highpass) and resonance.
But look for those things that don't lose their bas-sound when you resonate. The mam mb33 mkII also did a very good job at this.
Always use good reverbs (Shift line Astronaut V2 is a very good affordable pedal // it has space sounds, normal reverbs, arpeggiator reverbs with weird algoritmes,..// if you can get this one, if you have more money get a strymon big or blue sky)
If you still need to buy a DAW go for Bitwig (it has LFO's and alot of good synths inside, good reverbs, really nice fx and it costs very little, like 300 euros compared to 700+ with other DAW's)
For plugins look for Phosycon (the horn preset is insane whan you put the arp to random)
The Mini monsta is also a very nice vst for acid
Buchla Easel VST novation I think? Amazing sequencing, amazing sound!!!
Juno-106 same story
Epidemie and Mr Gasmask told me they use Sylenth1 in every song from Lennar Digital
Epidemie also used the retro 777 alot, seems to be a very nice sounding machine.
Never forget what composition and proper mixing can do, use alot of delays/reverb in combination with your filters and resonance etc.. and you'll be fine with any plugin/synth
Idk it's just your flow and taste, your intrest and feels, follow them, don"t copy, don't try just go with your guts and create some epic content!