Roseville ... or perhaps Placer in the future
The Radio Shack PRO-164 is made by GRE. The equivalent GRE model is PSR-300. The PSR-300 has been replaced by the PSR-310, and that's the analog model I would recommend. It does a fine job in scanning the present Roseville system. I got mine from ScannerMaster (see link at top of this page).
However, Placer County has been working on a digital trunked system on VHF that only a few scanners can handle. While you can program the PSR-310 to receive it, you will not be able to hear any audio from that system since the PSR-310 doesn't decode P25 digital. If you plan to monitor Placer County a few years from now, and don't want a second scanner, you'd need a digital model.
I personally decided to get one of each and got the PSR-310 and the similar but digital model, PSR-500. Those two models use the same programming software (WIN500) and operate in a similar manner. But you can certainly pick up Placer County on the '310 now and the foreseeable future. Perhaps by the time digital is required, an even better model will be out.