GreatCall offers a pay-as-you-go plan that starts at $15 per month for 50 minutes, and runs up to $80 per month for unlimited minutes and text messages. If you choose to go à la carte, text messages cost 10 cents each. Voicemail costs an extra $3 per month.

Jitterbug Plus owners can add a number of wellness services to their plans, including 5Star Urgent Response ($15 per month), which gives you direct contact with a certified emergency-response agent, performs GPS tracking, and provides free 24-hour access to unlimited health advice from registered nurses. You can tack on other helpful services, too, such as automated check-in calls ($5 per month) and medication reminders ($10 per month). These services add up, but are invaluable to anyone who needs them.

The Jitterbug Plus is meant for a very specific audience--one that I'm not yet a member of--so reviewing a product like this can be difficult. But I've seen other products that try to make an interface too simple, and end up leaving out some important features. GreatCall has done an excellent job of creating a phone that is both easy to use and full-featured, packed into a modern design.