Happy bday!
Hydrasynth is a good choice for a pure sound designer, but it’s not multitimbral, so it’s stays a bit in the periphery at some point.
Roland SH4D might be a good choice, but the UX is very weird, the Roland way: the device sounds great and seems almost perfect until one thing you use all the time takes like 4 steps (like, saving a patch for instance.
Very different from Elektron, at least.
Id’ say DNII. It’s OK whatever your profile, IMO.
It’s still my favorite synth and I own way too many, so this means something.
It’s pretty powerful, and pairs very well with the DTII.
The polyphony is well implemented IMO.
It sounds really nicely, you can get very different sounds from VA to FM madness.
These are pure DNII, including percussions: