Semi Weighted, 61-key, and non-graded? Go for the Axiom Pro/normal 61 line.
I cannot comment on other keyboards as i'm currently using the Axiom 61. Great feel to the keys. I do not play much, but program the notes into a sequencer.
As you mentioned you're currently trying to produce Electronica and Hip Hop, i can relate to you on that.
Now, to elaborate a bit on the keyboard:
The endless rotary encoders let you adjust, whatever value/settings in your software, by increment/decrement values of +1/-1 respectively when it comes to Midi. The faders are great for quickly adjusting the settings of your chosen software while the rotary knobs allow for minute adjustments.
Next, the Axiom line provides 8 pads for you to program or trigger sound fx, drum kits, and samples. The pads are what you see on some MIDI controllers which gives the user 16 pads to play with (See the M-Audio Trigger Finger).
Lastly, should you decide on making the purchase, do know that M-Audio provides a free Enigma editor for you to tweak how you want your rotary encoders to behave.
Eg:
- +1/-1 endless rotation.
- Value "A" to Value "B" in one rotation.
- "On" or "Off"
Do not forget about the assignable buttons/switches too. You can configure them to, for example, turn on/off a delay, listen to your mix in mono, turn on/off an EQ. The possibilities are truly endless.
You can however, use the Enigma editor to freely customise how you want your entire keyboard to behave as well. So feel free to consider some of my points as moot.
