My midi setup has come a long way from the days of chapman Stick Grid and Roland's GI-10. The best pitch to midi converter I owned was the Axon AX-50, but when the company went down and stopped supporting the software, it become increasingly difficult to use.

These days, my setup is a combination of Roland's V guitar processors and various soft synths on apple's MainStage. Plus, the addition of Jam Origin's guitar midi app has been a powerful tool.

Here's a little video of me jamming on a trance tune using this setup.