I've had both a 7600GR and a Sat 800, at the same time. Get the 7600GR.
Performance-wise, they are in the same ballpark, but the Sat 800 is built
like the cheapest boombox you've ever seen, while the GR packs the same
performance or slightly better in a smaller, well-designed and extremely
well-built package. If you need a larger speaker, just use an external
speaker.