Q: I like Keith Fitzgerald's investing philosophy - "invest in the best, not the rest".

Can you please provide me the best two within the following sectors (please provide your favourite of the two) ? NYSE or TSX-listed:

1. Within the Healthcare sector, I'm interested in specifically Diagnostics as a Service.

2. In the Defense sector. Two companies that continuously improve through technological innovation.

Q: Given that US Stock dividends in a TFSA are subject to US withholding tax, is there any particular type of stock that you would recommend for a TFSA for a senior who has moderate risk tolerance? Thanks for your help.