Ok I have thought long and hard about this and almost upgraded many times. We go in less then 2 weeks on quick service and hopefully I will write a review about it...but here is my take.
You need to make sure you are comparing apples to apples and I dont think some people do that.
Each plan comes with a refillable mug so disregard that
Each plan comes with 1 snack a day so disregard that
Each plan comes with 1 quick service meal a day so disregard that.
1 plan has an addition quick service the other is a TS. You are getting a meal with both but the type of environment is different.
For us 2adults 1 child going for 8 nights the upgrade would be about $425. We would be doing 8 TS meals and they would all be dinner and I figured we would be tipping about $15-20 for each of these meals so even using the low of $15 times 8 meals that is an additional $120
So our total cost to upgrade would be $545. To me spending more then $500 to just get a different type of meal just wasnt worth it.
Also I have a plan for our park days but what if we decide hey 1 day at DHS was enough and we want to go to MK again today. Now I have to figure out a new ADR. Or hey we want to leave the park early or we arent hungry. Well we arent tied to an ADR.
The other thing I figured was I can still add some sit downs.
We are doing Ohana dinner which will be just under $100 (including tax and tip)
Chef de France lunch which will be no more then $65 (including tax and tip but probably less)
Then we are doing Rainforest Cafe. We bought gift cards for $15 when there was a saveology deal for them for 7.50. Mom and sissy also bought 1 for DH for xmas and I signed up for Laundry select card for $25 but you get a $25 credit plus you get $25 for your birthday month (which is Jan for me

) so total out of pocket is $47.50 (even counting mom and sissys cost) and that will be hubby getting the steak (maybe me too) and I will probably get a drink and DS will get the kids drink with the cup (all stuff not included on dinning plan)
Also with the package you get $15 to plant hollywood so we were thinking about hitting that for a light dinner one night. (probably pay additional 20-30)
And I was also considering a trip to Sci-Fi which would include steak for DH and run us about $70 (including tax and tip)
So grand total out of pocket would be $312.50...ok lets round it up just in case we order something else so $350...
That is $200 less then if we upgraded.
And we will get 16 quick service meals and 5TS meals eating exactlly how we want (often getting most expensive) and getting dessert and milk shakes and adult beverage.
On regular dinning it would be 8 quick service and 8TS...
So not only am I saving $200 but I am also getting 5 more meals
And if we decide no to Sci-Fi we save another $70 and if we skip planet Hollywood no big deal...we are still getting sit downs and we arent tied to reservation and we arent guilted into getting things we dont want. Like normally I would get a water but if its included well I'll get soda even though I really want water. Or I know hubby would order dessert cause it is included but he really isnt a dessert person...and sometimes I just want an app as my meal, or I get a meal and a side salad and DS just shares with me. Which is probably what till happen at Rainfoest cafe cause really $8 for a kids pizza, come on get real.
So I might have a different opinion when I get back but there you have it for now.