I would just go with a $100 MIDI keyboard except I've been wanting to get my own piano/keyboard for a long time now, and a synth-action keyboard just won't cut it for practicing.
Yes, you're right, I was definitely unclear about MIDI controllers vs. keyboards. That clears things up.
I won't be doing much, if any, live recording. And if I do play it elsewhere, the only thing I care about is that the built-in piano sound sounds good. So I don't think I'd have much of a need for built-in sounds--at least, not on a keyboard. But I do want a keyboard since, like I said, I've been wanting to have something to practice on for a while now, and my preference is definitely going to lean toward weighted ones (or semi-weighted, at the absolute least).
I like the idea of buying a keyboard and a separate MIDI controller a lot. That's likely what I'll end up doing. I'm trying to get my feet wet with production by getting a keyboard I'd wanted to buy anyway, and I can't see a reason for getting the $1500+ keyboards since I won't really be needing the built-in sounds and bells & whistles, not at that level. It'd be nice even at a non-professional level but I can't justify spending that much yet haha. But having a MIDI controller like the Korg would be nice for some extra stuff. And if I do end up needing more sounds, I'll probably just end up buying something like Komplete at some point (another thing to save for...oh well ).
Would that purchase make sense for my situation? I just want to make sure I'm headed in the right direction before making a major purchase like this.