I have been more than pleased with my '07 500. Not f.i. Gone everywhere around Texas, from Austin to San Antonio & Houston. the longest trip was from San Antonio to New Orleans and back: total about 1200 miles in 4 days. And if you're familar with Louisiana, there's only interstate hiway from Texas border to The Big Easy. That scoot handled the trip great, no trouble passing big rigs, and it's heavy enough that crosswinds do not bother it.
As to the speedo inaccuracies, easy enough once you get a few miles and get familiar with the scoot.
I too am an older rider, pushing 70, and it is easier and more comfortable with more storage space and conveniences on a scoot. I am prejudiced towards the Kymco Xciting 500, thought I would state that for the record.
My scoot is barely a year old and she's clocked nearly 17,000 miles.
Hope you enjoy yours as much as I've enjoyed mine.