If you're choosing between the Golden Visa or the D7 Visa, it's going to come down to two things: time or money.
The Golden Visa is going to require you to spend more money in order to qualify. We went over those qualifications above. But, someone in possession of a Golden Visa only needs to stay in the country for 7 consecutive days. For a D7 Visa, on the other hand, you'll need to stay in Portugal for 6 consecutive or 8 non-consecutive months.
The D7 Visa also won't require you to make an investment in Portugal. You'll just need to show the standard proof of income required for most visa applications. The D7 visa is a very popular option compared to Portugal's Golden Visa. This is because the D7 visa has an easier application process and takes much less time. It can take up to 6 years for an ex-pat to establish Portuguese residency under the Golden Visa process. If they choose to apply for a D7 visa, the process only takes one to two months.