Hi Deane,
Sorry to hear about your misfortune, hope things will work out well soon. As to your query, forget abour Roland, of all folks you should know that by now

I'd say it is a toss up between the PA900 and the PA600. I presume the PA600 is ligther, it is only half the price of the PA900, but then of course it cannot do all the tricks the PA900 can, as Don will confirm.
Good luck on both counts,
regards,
John