for me I would say yes but I still bounce around due to the fact I dowse for which deck to use.
I created the perfect deck from decks I own / have owned. this was done by choosing my favourite images and a 78 card deck was born, taking images from across around 20 decks.
Then I extended the majors using images that conveyed something slightly different, thus giving an extra interpretation to fall back on. these were scanned, sized the same, titled the same and then printed and laminated. In total around 30 decks have been used.
I have two versions. The larger one has 120 cards, the smaller one has slightly fewer cards and some images are different (where I couldn't choose between two favourites, one went into the larger deck, one went into the smaller deck). by larger and smaller I refer to the dimensions/card size itself.
Love it to bits
I resonate with every single image which would not happen with all decks, and this has only happened because I chose them.
So yes for me there is ONE deck but it is not at the exclusion of other decks in my collection.