For blatting around purposes I would use the 737-200.
a) Its one of the few aircraft still commonly around that is very LOUD. And thats important.
b) Simpler systems - you don't want to be in Groundschool for weeks learning the nuances of control law logic. You want to be blasting off runways empty and bursting through stratus at 6000fpm...
c) Ratings on this type are available and cheapish - no need to burn money for the sake of it.
d) Its a nice handling aircraft - much less pitch couple than other types.
WWW