I think the perfect starter keyboard for everyone is different...

For someone at the age of 65 the following things come to mind...

- Budget
- Technical understanding (easy opperation required)
- Local dealers available
- Musical style (prefering piano style or organ style playing).. i.e. 61 or 76 keys.

Yamaha DGX is a great option for starters that has all possible things needed to have fun. Espescially if its for home use only.