I can see the logic, just to be able to buy a machine that has the right hardware for low latency operation and a parallel port that puts out 5v would be a good start. I'm using a twin Xeon Dell precision 670 - a very good PC three years ago but it's not great for EMC2 because the latency jitter is high and the parallel port only puts out 3.3 volts which isn't enough to run the charge pump on my breakout board.

Mark