The PSR-410 is a good scanner, I have one of them myself. It will handle pretty much everything except for digital (P25 conventional and trunking).
One thing I would caution with any GRE or GRE-built Radio Shack model (GRE builds almost all of Radio Shack's scanners) is that they are prone to "overload" from strong signals in RF rich environments. That may or may not be an issue depending on where you are in SI. Uniden models typically do not suffer from this phenomenon. The Uniden alternative to the PSR-410 would be the BCT15X, which is a bit more expensive at around $225, but is a very solid, capable unit. I own the handheld version of the BCT15X, which is the BC346XT, and I absolutely love it. The performance is fantastic. If I had to choose between the two scanners I own, the GRE or the Uniden, I would take the Uniden hands down.
It's also worth noting that, while the BCT15X is $75 more than the PSR-410, it also comes with the programming cable in the box (albeit it requires a serial port, it's not a USB cable, but you can pick up a $10 serial to USB adapter for it) and the software to program the Uniden (FreeScan) is 100% free and it's quality software. With the GRE you would need to purchase the programming cable ($30-$35) as well as software ($25-$35) as there is no free GRE software. The Uniden covers more frequencies than the GRE, and it also has a lot more memory.
Just some food for thought. Whatever you decide on will be a huge step up from what you have now.