Just to add some info...
I ordered a dual tour back in 2006, it arrived in perfect shape and I had zero complaints about it, except for the fact my wife wouldn't ride on it (said the backrest was to small). I never realized until much later that they had sent me their tiny backrest, not a stock one and it really was to small. The seat itself has been great though, and once I bought a larger backrest my wife is willing to ride
I bought a used stinger, which is great except for the part about the cover in the seat area 'bubbling'. Seems to be a common problem with this model seat. It doesn't matter when you are sitting on it, but looks like crap when you are off.
Most recent experience was to order the dual tour seat rail for my wife that will now ride. It took
OVER A FREAKING YEAR to receive that rail. After waiting forever, it does not fit correctly. One of the bracket tabs is at a poor angle. Due to the design of the thing it may not be correctable by bending, I may have to cut it off and shave it at the cut and weld it back on. Did I mention I didn't realize the fit problem until after I had it powder coated?
I'll order from Corbin again if they have a style seat that I can only find from them, but I won't take delivery. Only way I would purchase is by picking it up after serious careful inspection at their Ormund Beach location that luckily is close to me.