I had an oif t120v that vibrated incredible badly but it was bored to +60 without any rebalancing so that may have played a part
I had a tiger tr7 that was ok ish
My t140e was pretty good even after I changed the 7.8 -1 pistons for some t140v 8.5 -1 type
Worst vibrating bike I ever owned was a 750 commando motor fitted in a wide line
Closely followed by a plunger A10 and a BSA B44 that some idiot thought he could change his own big end bearing and re align the crank himself with a big lead hammer ,tyre levers,and a pair of steel wedges!!!