Nitro vs spreader bar and a flip

Typically the integral (1 piece) is lighter in weight which is an advantage, but most people would give up the difference in weight to be able to run as a quad when possible due to the fact it saves on length (if your over 90' = pilot car) and your maneuverable as a quad. But to each their own.

If you want to be a bit more technical about this topic, since you show a picture of a Superior stinger I am not a fan of the pivot being up front (more stress) especially for the pivot pin size in my opinion a bit too small. Plus it binds the trailer more when turning. They are prone for the pivot pins to wear badly and eventually have a lot of slack in them which could be mainly that most people don't grease the pivot each day its used, but I still believe the pivot pin is too small.

Then you could get into the hydraulic versus rigid bar scenario. You can get a hydraulic nitrogen stinger that has a detachable axle just like the rigid bar...