I had an XJ6 as my first big bike and I would recommend one.
Held up well commuting through winter (lots of PF52 spray)
Never had a single problem with it in 18 months.
Really smooth, smoothest bike I’ve ridden. Very easy at commuting speeds and filtering/walking speeds. No need to use the clutch at slow speeds. Easy to put your feet down.
Brakes, ride etc all good. I got a nitron shock for mine after a while, which stopped some of the dive from the comfy suspension (you are less fat than me, I weigh 95KG).
Never been on the back of one but I didn’t get any complaints (its got a smooth engine, I may have mentioned that)
Its a very decent commuter/first bike and will feel a big step up from a scooter - ride, brakes, stability, acceleration.
You should be able to get some bargains too
Less good stuff
It’s a bit manic, high revving. I actually quite liked that though.
It’s not got loads of torque, which makes it easy to ride, but you need to be a little busy with the gears out of town.
Its very quiet. In traffic, even the pedestrians won’t hear you.
I wanted to upgrade faster than I initially thought I would.
Its quite heavy for its c70hp.
In all, I wouldn’t hesitate to recommend an XJ6. I would only say that if secretly you are hankering after something a bit bolder, save yourself the depreciation, and go for that instead. I wish I had