I know the new ones trip less. I know the ones that have the rounded buttons seem to trip more. fultron and red dot seem to trip less, but it is hit and miss. maybe it is just me, but the grey 20 amp may just look more industrial, but I hardly ever reset those. The 20 amp ones are the ones with the sideways "T" on one side of the plug.
luckily it looks like only one day between now and Christmas Eve with a 30% chance of rain.