In terms of the franchise vs. managed issue, I think its worth breaking out FS vs limited service.

In my experience, Courtyards, Residence Inns, Fairfield Inn, Springhill Suites offer a pretty consistent experience even though the overwhelming majority are franchised. But, there's not much to mess up on as there usually aren't upgrades available, I don't really expect much, and they always offer me a market item and points.

Experiences at full service properties often differ. As I read the data from the annual report, 1/3 of US properties are managed by Marriott and 2/3 of US properties are franchised. I suspect, but don't have any data, that Marriott managed properties are more consistent in recognizing elites. For example, JW's managed by Marriott seem to regularly recognize I am a Plat Premier and give suite upgrades when available. Some franchised properties are excellent, however, and some are also consistent in a negative way.

So ... it would be interesting if we could track them in a consistent way. As I mentioned in an different thread, Spire Hotels, MDM, and Remington Lodging seem to hire engaged GM's. The problem is how to identify these properties as its unclear unless you look at the wall to get the name of the management company running the hotel.