Hi Eightyknots,
FYI - when I picked up my Savvy S we flew it from Archerfield in QLD to Penfield in VIC, stopping overnight in Narromine. That's a trip of roughly 750+ nm.
That's the longest trip I have done, but have flown plenty of 3-4 hour trips round VIC or to NSW since. I have found it very comfortable over such distances.
Lumpy, turbulent weather does, of course, make for discomfort, but that's going to be the case with any LSA.
My hangar-mate flew his Savvy XL to Alice and back recently and thoroughly enjoyed it.
Cheers,
Neil