It's your money to spend...but are you listening to digital (P25, APCO-25, Project 25, NAC) at all or not? If you are not listening to any of those, you're probably looking for an analog scanner. If you want to listen to digital, then never mind this and go buy a digital scanner. If you really live in the Bronx as you say you do, 95% of the activity (according to the database) is analog.
You could easily save $200 to get a scanner that will show you the "control tone" you are asking about. Hell, a refurbished Pro-164 ($120) vs a Pro-106 ($425) is a $305 difference at Radioshack right now. You could easily get a Pro-164 or PSR-310 that does the same thing...