Start with how your parent actually reads. If they mostly need help with mail, labels, and the occasional book, a good optical magnifier with built-in lighting is often enough and easier to grab off the side table. If macular degeneration or advanced low vision is in the picture, an electronic magnifier (a CCTV or portable video reader) earns its higher cost by letting them change contrast, invert colours, and blow text up far past what a lens can do. In our experience, families who buy a cheap handheld lens first almost always end up upgrading, so if the eye condition is progressing, we'd skip the stopgap and go electronic sooner.
Vancouver light matters more than people expect. Older homes in Point Grey, Grandview, and Mount Pleasant tend to have deep rooms and smaller windows, and our long stretch of overcast winter days makes glare and dimness a daily struggle. Ask any retailer to demo devices under warm, adjustable task lighting, and pair a magnifier with a proper LED reading lamp rather than relying on overhead fixtures. In a downtown or Yaletown condo, bright afternoon glare off the water can be the opposite problem, so look for anti-glare screens and matte finishes.
Buy from a retailer with real low-vision experience, not just a general electronics counter. You want staff who let your parent try devices hands-on, explain the warranty in plain terms, and offer service or repair without shipping the unit across the country. Portability is worth weighing too, since a lightweight electronic reader travels well on transit or to appointments.
Our recommendation: for a senior with a stable, mild need, buy a quality lighted optical magnifier and a good lamp. For anyone with a changing eye condition, invest in an electronic device with adjustable contrast. The trade-off is honest, an electronic reader costs more upfront and has a small learning curve, but it adapts as their vision changes instead of being outgrown in a year.