You have an option of either - USB, serial/parallel, and PCMCIA. Does you laptop have a PCMCIA slot? What laptop (and speed) are you using?
I suggest a serial/parallel MIDI interface especially (especially so with slower computers) to achieve satisfactory low-latency. USB have some problems with latency (faster desktop computers may reduce this problem).
If you´re interested, I have a MOTU Flyer (parallel/ serial) - 2-in, 2-out MIDI interface. Can sell you at a good price (and it is in excellent condition). I´m very happy with its low latency - certainly beats the Opcode I had.
Cheez
I suggest a serial/parallel MIDI interface especially (especially so with slower computers) to achieve satisfactory low-latency. USB have some problems with latency (faster desktop computers may reduce this problem).
If you´re interested, I have a MOTU Flyer (parallel/ serial) - 2-in, 2-out MIDI interface. Can sell you at a good price (and it is in excellent condition). I´m very happy with its low latency - certainly beats the Opcode I had.
Cheez