For me, I wanted a lightweight board that married a good clone engine with a usable synth for a second tier - at a sensible price. If the NE4 had anything beyond a basic sample player it would have been the obvious candidate. If the PC361 was a little lighter and more readily available, it could also have been in the running. If the XW-P1 had a clonewheel engine, rather than a kind of wannabe organ, then I would have kept that and used it. All of those boards fall short in some respect, except, apparently, for the VR-09, and so I have it on order.
Do I expect compromises? Yes. Do I expect it to have the best organ, synth and piano engines from dedicated boards? No. But I trust Roland to give me good quality sounds, and a sensible interface that's easy to use in a live situation. And for the $850 I'm paying, I'm unlikely to be disappointed in those respects.
At the moment, for top board I use either the Numa Organ coupled with a Plugiator or a Micron (the only synth with full-size keys that will fit on top of the Numa without having to use a 3-tier stand), or VB3 played from an Axiom, and teamed with the Plugiator. It's OK, but I would prefer a simplified setup that doesn't involve either MIDI (with the need to also add external filtering), or the risk of collapse: my K&M 18880/81 starts to wobble with a weighted board on the bottom, and then the Numa and Micron up above (I love that stand, as it's so incredibly light and easy to setup).
Before committing to buy the Roland, I really didn't expect to get more than basic software functionality, and so I'm not disappointed now the manual and hands-on testing has confirmed that. Dedicated clonewheels with waterfall keys and separate rotary speaker outputs, etc. start at closing on $2k. The VR-09 was never going to change that. VA synths can be had relatively inexpensively - even analogues, too, in some cases - but you need real estate for those. The piano engine is not vital to me, but it's nice to have alternatives/backups available. But put all that together WITH DRAWBARS, and it's a helluva deal, IMO.