I currently own this cruiser on the left
and I have owned a square body diesel 4x4 burban.
I am currently selling my cruiser and buying a 6.5 TD 4x4 burb.
The reason for sale is purely financial and needing something that can tow right now... the anemic I6 in the cruiser isn't going to tow my things when I move across the country and also i'm picking up the burb for 1k and selling the cruiser for many more that than.
I can give the pros on each really.
for suburbans it really depends on the model you are looking at though
80 series
reliability (not by much though suburbans are plenty reliable)
fully boxed and stronger frame
Coil Spring front and rear solid axles
Factory Lockers
Better world travel vehicle due to parts availability
Better aftermarket support for off roading parts
Suburban
seats more people
more hauling capacity
higher tow rating
dirt cheap parts in the US and they are at all the junk yards for dirt cheap used parts
better aftermarket support for mechanical parts (many parts on a cruiser are toyota only or some crappy chinese brand)
cheaper entry price
my new suburban will be modded for overland type stuff and will be able to do the ruff stuff also.
Really it depends what you want it for.
Off road ability go with the cruiser
More hauling capacity and room, go with the suburban.