there is no one way people vacation, so it all depends on your expectations. Being Park people we would rather save money on the resort and extend our days at WDW. I've never once thought to myself, I wished I would have spent money to stay at that resort rather than spent the money on extra days at WDW.
After multiple trips per year for almost the last decade, we finally settled on a 12 day trip. We fly in on a Sunday stay at GDT at CSR, but ultimately we are park people, so where we stay isn't critical as we spend most of our time at the parks. We just do a little skyliner tour for some resort hopping and eat a bite for lunch at one of the QS on arrival day. Then, later we head over to DS for dinner. We found if we fly in on Sunday, we obviously only have one weekend to contend with during the 12 days and typically take a day off from the parks the following Saturday. We sleep in on that Saturday or it's a good day to do those must do breakfast ADR's at a resort or two. We book the latest flight out of the MCO and just use our last 10 day park hopper ticket on our departure day. Typically we take off from the parks around 4-5 to head back to the resort and take off to MCO.
I've never once thought at the end of my trip, I wish I would have spent more money to stay at a resort rather than I wished I could spend an extra day or two on my vacation at WDW. My suggestion to people is take your budget and compare vacations... For example in Sept. a party of 2 could stay at GDT for 12 days for with park hopper tickets in a water view room for about 6K or we could stay in a standard Poly room for 8 days for a little over 6K. No telling how many days a park view would knock off but I'd guess it would be significant at WDW. Ha