My $.02---by which I mean, the advice "present me" would like to give to "past me" from 6 months ago:
- Pad controllers are definitely a different---and, for some better---way to play beat and electronic drums. For me, the playability/physicality of pad controllers is more comfortable than a keyboard.
- Unless you have a very good reason to go niche or complicated in your setup, don't.
- Start with something basic that has good resale value (or, better yet, buy from somewhere with a decent return policy, so you can try something out to see if it's going to work for you before you're stuck with it). The NI Maschine stuff is amazing, but it's easy to get lost in the weeds configuring and programming stuff rather than just playing beats. That said, it seems like an excellent platform to grow into if you want to make beats and aren't already committed to the MPC workflow.
- In my experience, the budget Akai stuff is very inconsistent in terms of quality control. Unless you're springing for an MPC (which I don't think is a good idea for someone who's new to all this---see above), it's probably best to avoid Akai.
- If you're looking for a VST for realistic drums, Addictive Drums is an excellent option and pairs well with a decent MIDI pad controller.
- For developing your technique, other than Melodics, check out
Quest for Groove.