Talking from a no status persoective:

Sheraton
- is closest connected to the airport terminal
- has just come out of full scale renovations so feels fresh and new
- the service in the club is really personal attentive
- as club lounge does not do breakfast, you get the full buffet in the restaurant

Hilton
* only stayed here before renovation and in the old building
- is further walk (indoors) from the airport terminal
- is a total new building building from end2015
! maybe they serve more adult beverages in their executive lounge?

YMMV
- other can chime in on the status recognition