Why?  I already have his.  

I like the weight of the PA1000.  But if the price were right, I might have both.  The 4X could stay in place and the 1000 available for functions in the other end of the building, or for outside jobs occasionally.  
I have a good friend at the Veteran's Home and I'd like to go play for them.  He is 98 and won't be with us much longer.