I totally get it... We always stayed value and then last year, decided to stay moderate... When it became time to decide where to stay this year, I wanted to do value since it was cheaper, but after paying for a mod- I just couldn't go back to value...

Way nicer and more relaxing!
I feel you, but I think the difference between Mod and Value is different then Value and Dlx or even Mod and dlx.
The price difference between Mod and value, if you can get a solid discount on the Mod, 30%, or
free dining (difference between QS dining at Value and Reg dining at Mod) there isn't much of a price difference. It can still be an important factor for many families on a budget, but the gap isn't too huge. And there are some nice aesthetic differences, bigger pools with slides, hot tubs, queen beds, etc ....
The difference between Mods and Dlx, are a HUGE jump in price, and generally the value between the two are very subjective. Some people prefer the indoor halls, others actually prefer the outdoor. Some people thing the grounds at some of the mods, CSR, PORS or POFQ are some of the nicest on Disney, more so then GF, or CR ... etc etc. But the price, there isn't really any debate there, the jump to Dlx is pretty significant. There really isn't as clear a case to be made for the value of Dlx, other then of course, the location of some of them kicks butt. But then other people will happily say they will not spend Hundreds (or thousands) of dollars extra to avoid 30 mins on the bus each day. So again, pretty debatable.
The price difference between value and Dlx is astronomical of course.
So yea, I can see why the struggle between Value and Mod is so tough, if the difference in price is a couple hundred dollars for a week. Its enough money to think, hrm, I could use that 200 bucks. But its little enough money to think, Hrm, I could really use a slightly nicer resort with a bigger pool/water slide and hot tub ...