Didn't read the whole thread but I'll add my cynicism here.
In chronological order, I've flown:
Be-1900 C/D
Emb-120
Crj-200
B757
B737
A300/310
MD-11
A300/310 again
B757 again.
And honestly, at this point I really couldn't care less what I'm flying. It is simply about the number of days off and how much i am paid. "work" is a 4 letter word and i treat it that way.
I guess the first few months flying the 1900 was "fun", since it was a big step up from GA stuff. And the first few months in the CRJ were cool, SJS and whatnot. But that's all gone now. It's just a job. I move metal through the sky so I can pay for the things I enjoy doing on my off time.
There really isn't much fun to be had in civilian transport category aircraft anyway.