The Akai MPK 49 / 61 will work with Studio One. There are host of others, if you load up Studio One and go to add controllers, there is a list of natively supported controllers. You can always add your own too.
You're asking for a 5 Pin MIDI Controller? That would be any Synthesizer from 1984 on practically as any MIDI Keyboard would work, it's just a matter of preference if you need weighted keys or not. Most modern controllers work with MIDI Over USB and still have 5 Pin MIDI so you can route output to your MIDI enabled gear from the DAW back out through the keyboard.
