Theoretically, could i use an old MIDI Synth (eg a Korg M1) as a MIDI controller, or would a newer dedicated Standalone MIDI controller keyboard do the job significantly better

Just curious as to your thoughts on this people, as i intend to buy a controller keyboard, but, being the dirty cheapskate that I am, wondered if an M1/ Juno 106/ similar ol' MIDI synth off loot for c200 squid would do the job no probs