San Mateo Village has a more central location than Shoreview. Besides having a neigbhorhood school and park, it is close to the CalTrain station, Whole Foods, and Hillsdale Mall. In comparison, Shoreview is a bit more isolated, east of 101 freeway and closer to the Bay. The shopping is not nearly as nice or convenient.
Shoreview has several different subareas: North Shoreview, Shoreview, Parkside, and Lakeshore. The homes in these areas tend to have more open floor plans than you find in San Mateo Village. The architectural style is more contemporary, often with flat roofs and large windows. Parkside and Lakeshore tend to have larger homes with 2 car garages, some with 2nd bathrooms and even family rooms.
Another thing to consider is the geology of the area. Much of Shoreview is built upon landfill. Numerous homes there have settling problems, and supplemental flood insurance may be required.
There are other areas to consider in the vicinity in the same price range: Sunnybrae, Fiesta Gardens, Sterling Downs, north San Mateo, San Bruno, and east side San Carlos or Millbrae. When looking for homes in a specific price range it is important to work with an area with extensive experience in selling homes on the Peninsula. Robin & Les Wrigley have 20 years experience helping first time buyers here on The Peninsula.