I was looking for everyone's opinion on what they think which hotel reward program suits me most.
I looked already on the internet about reviews about different programs but the reviews where mostly based on US residents.

At the moment I am on vacation in the US and I noticed there are a lot of properties of Hilton and Marriott brands even in the smallest towns.
But in Europe they have less properties. Madrid has only one Hilton property.

I spend around 50-60 nights a year in a hotel. Most of the time for leisure. My travel area is mostly Europe, US, Australia and occasionally Asia. I liked my stays at hotels from the SPG program. But I am not sure this is the right program for me.

I have some factors that I consider important:

- Quality hotels in the program
- Upgrades

Any advice would be appreciated.