You may want to check out in the September issue of Sound On Sound a review of
Jam Origin Midi Guitar 2. This software converts the guitar signal into midi data. But it only uses the standard output from your guitar. No special pickups necessary or anything like that. Hence it is converting your polyphonic playing!
But here is the thing, the reviewer stated quite clearly this beats the pants off any hex pickup going into anything previously. For speed and accuracy. Hard to believe I agree. It is around 83 pounds. ($112 US)
He said he is never going back to any previous system. This might be worth a look. Can be used stand alone or inside your DAW too.
They have never stopped developing guitar playing to midi conversion and it seems it is just getting better all the time.