Leeson has tighter tolerances than Oppgaard. Easier to use and more accurate it is still frustrating at the finest widths of cut. Thread lash meant a desired .023 might actually bounce between .022 or .024 during setup. I learned to fix this slop issue after working with hand planes. Taliafico fixed the slop to his satisfaction by shimming with some Teflon tape, keeping the adjuster in constant tension. I believe lash is an inherent trait of all threaded tools.
Rolling around on the table was easily fixed with thick produce bands used for asparagus. I had children so keeping things (like cups) away from table edges was instinctive. I could have leaned mine into the bench grinder and stopped the rolling.
The preferences for method of cutting relate to familiarity. Oppgaard had sharp and bothersome corners, something that model's user would likely never notice.