you need to define what you mean by 'all round'. If you are looking at

1. weight,
2.flexibility ,
3. design for live playing as a OMB
4. Excellent song database
5. quality of sound
6. Ability to import external sounds from most of the major sample formats
7. and self contained meaning that you can use the instrument live, in a studio and by itself with all editing features, sampler, sequencer style creator, complete sound editing without connecting to a computer and using a bunch of external software and it all being contained in one box .... then literally the only choice is the PA800

Now what do you mean by 'All Round' :-)