IMHO
early would be vacuum upper double motors... they suck
next that suck would be the early dual upper electric motors... they suck ... (new they were most likely fine.... old they have two speeds ... slow and slower) however are the coolest as they most times have a mind of their own and go different speeds and you look like an old tractor when they are going like that ~67
some had the dual upper electric for many more years (~77) with use of the split windshield (mostly military)
the upper single motor is fine .... works fine 68-74 these do not overly suck... just a little suck (been using mine for 30 years... it wipes)
the lower newer style is IMHO the best at clearing snow and rain... strongest and modern 75+
thge 75+ were actually two types as well a smaller then larger motor ... but function the same (Toyota heavy trucks (FA) used this setup for many years (67?-on)
LX model cruiser used the 3 wipers on the windshield (not middle east) arguably that would be the best
All these at one time were new and worked good as intended... nothing like a modern car these days.... but... the work