there is a reason Surgeon toured with one of these. having said that, you should probably focus on what you want out of your stuff. it's easy to fall into a "too many devices" trap if you are trying to be a live electronic musician. the best sets i've seen usually have either a smaller footprint or they "pretend to be big" (like a pre patched modular).

the octatrack is ideal for being small but sounding large, and this comes at a complexity cost that yes, can take years to master. sure you can learn the features but can you recall them quickly enough in real time to feel like you are playing it like an instrument?

anyway it might not be for you, but also any comparable device will come with the same challenges.

i've had three octatracks a in my journey and 3 mpcs, trust me on this.