Best 49 key midi keyboard + midi controller with most advanced arp and chord function?

[dasen]

Im using Logic Pro X on Macbook and my budget is max 500 EUR.
Im looking for the following:

1. What 49 key midi keyboard has the most customizable chord and arpeggiator function?
2. Which midi controller without keys has the most customizable arpeggiator function?
3. Which midi controller without keys has the most customizable chord function?

[Ofthewall]

1. I think novation sl 49 mk3, it also has multiple sequencers onboard that you use with hardware synths.