Most radio shack scanners are made by a company called GRE with a few being rebadged unidens.
Some radio shacks will program a scanner for you, mine did but the frequencies they loaded were all useless so I cleared it out and started over myself.
Be careful about letting the scanner re-charge the batteries, most are a simple dumb charger which is simply a trickly charge circuit at a slow enough rate to charge most any type of battery safely but doesn't give the best life. I liked the pro 97 because I could pop out the little battery holders so I could charge one set in a good charger while the running the scanner from another set.
Analog and digital when referring to scanners has to do with the type of trunk systems it can decode, not the type of tuning. All are digitally tuned. You want to look at a dateabse like radio reference and determine if you can do with a plain old non trunked or need analog trunked or digital trunked. If you do go with a radio shack then wait for them to go on sale (watch the RR forum, someone will announce it), for example my $199 pro97 went on sale for $149.