After months of research, and browsing pretty much every brand, here's the best midi keyboards i found out at every price point.
25 keys
Allthough 25 keys aren't enough for a studio keyboard, the Alesis v25 has full size keys, mod wheels, drumpads and 4 knobs; making it the best travel midi keyboard. Best for composing lead parts, not so much for composing though.
49-61 keys
Both of the next keyboards come in versions of 49 and 61 keys, you choose the one for you!
4 octaves and all the features you'd want from a midi keyboard, the Arturia keylab49 has the best built quality on the market and it also includes Ableton live lite and the Arturia Analog Lab 3 (Fantastic software by the way) for free. The only downside to it is that the knobs are stepped and will wear out pretty fast.
Alternatively, you can check out the Novation Launchkey 49, at the same price has the built quality you'd expect of "plastic" and to be honest, the software it comes with isn't worth the time.
88 keys
I would suggest 88 keys only if you plan on composing classical music and live performance. The usual price for these is around 800$ or more because they build them to emulate the feel of a real grand piano. Nektar made the IMPACT LX-88 with budget players in mind, sacrificing the accurate real piano feel to make the product affordable, on top of that they added features like drum pads, knobs and controls that you'd expect on synthesizers.
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