Sorry, guys... obligatory fanboy spew about to appear , but...

That's the reason I haul the G70 around. Sure, I'd LOVE a nice 26 lb. load-in! But first, the G70 piano is surpassed by very little, including several VSTi's I've tried, latency is undetectable (faster than any computer system I've used - I CAN hear and feel about 3-2 ms difference in latency, from messing with my sound card a lot, and that hardware responsiveness is tough to achieve on even the latest, greatest CPU's), and the attached keyboard is the best compromise between full piano and full organ available.

If it comes in a 45 lb. package, so be it. I wouldn't compromise EITHER of those features to save even 10 lb. of weight.

Utterly convincing piano, a decent B3 emulation (better than most), and a keyboard you can use for BOTH are my BASIC 'must have's' before any other consideration even matters.

That kind of narrows the field, IMO....
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An arranger is just a tool. What matters is what you build with it..!