Hi Dave

Perhaps a consideration would be a Pa600 and a Voicelive Touch 2. Feed the VLT 2 output into the Pa600.

The VLT2 also works out the harmony from either the Guitar the Aux input or the Midi signal from the Pa600 without changing any settings and is far more flexible than the on board VH in any of Korg's keyboards, plus guitar effects as a bonus.

The set up is also a lot cheaper. The UK price for the Pa600 was £800 plus £440 for the VLT2 against £1900 for the Pa900.

I was going to change my Pa600 and my VLT 1 for the Pa900 but was disappointed that the VH in the Pa900 was the old version not the one from the Pa3x so I opted for above set up, a few more cables but it works very well.

Regards

Col