Hello,

NO !!!! at least not in my opinion.
I played the PA-80 for two years , currently have the budget PA-50 which as you know is almost identical to the 60 and pretty close to the 80 as well. In my opinion the PA1X, which I would like to have as well let there be no misunderstanding is way overpriced and, you said it yourself, basically has some improved samples and styles, mainly drawing on the styles and sounds of the PA-80 however.
My advice would be to keep the PA-60 (have you downloaded my latest software from www.irishacts.com ???) and spend the money that you save in this way ( a considerable amount I daresay) on a Yamaha 2100 or 3000, or e.g. a Ketron , even the SD1 is offered at very competitive second hand prices on EBAY.
good luck,
john smies