I've owned my 4S since last June and have experienced some minor glitches but nothing that has caused to me bring my Taycan in for service. The one continuous issues is my steering wheel will not rise up when I shut the car off and exit. My seat moves back but the steering wheel stays in place...
I had the same choice and choose the 4S with the standard batter rather than the standard Taycan with the battery plus option. No regrets whatsoever. I'm getting between 260 to 270 in range with the standard battery which is plenty for me.
If you don't rely on what salespeople say that's your prerogative. I've know mine for a decade and he happened to be a friend so yes I rely on what he says. BTW the plug and charge is working again. Just charged with no issues.