I own two 9000 Pro's so I guess it's my current fav, and there is no other arranger(s) I want in their place, but I've had several issues with Yamaha that make the 9000 Pro less of an "all-time fav" and more of a "it'll do for now fav". However if Yamaha or someone else doesn't make a better 76-note pro-level arranger than the 9000 Pro in the coming years then I guess the 9000 Pro will win my "all-time fav" label by default.
We focus on portable arrangers in this particular forum but there are bigger and better arrangers out there in the form of home instruments like Yamaha's CVP line and others. So the "all-time fav's" here don't necessarily mean the very best actual arrangers on the market are included.
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Jim Eshleman