Only difference really is the sticker and the fact the glass on the ADA tank is lower iron. It gives a clearer view through to your tank but honestly, not 35£ worth!
Because I absolutely love the betta I keep inside that tank, and he lives in the kitchen with three German shepherds, I thought it prudent to use a lid.
My lid covers nearly the entire tank as I scabbed it from another of my tank sets, not sure how much surface the ADA lids cover.
Here's my tank with the lid off.
I use the Up Aqua LED light which grows moss, bolbitis, anubias and java fern really well in this tank.