While I would agree to most of the comments above, I totally disagree to the following:
Until you've purchased 40 cards, stick mainly to those of Standard (1080p) quality. For most displays 1080p cards look good enough and they are a cheeper way to get to the point where you get a higher discount. Buy newly released cards within a week of their release date to get a better price, but mainly do this after you have reached 40 cards.
In fact I see a huge quality difference between the 3k and 1080p shows. And there defenitely is, doesn't matter what display (of course on some the better the diplay the clearly difference is visible.. I've never bought a 1080p show, as they don't meet my quality requirements. All 1080p shows that I have, are disabled in my collection and coming from wins or bundled discounts form the weekly bonus.
At the other hand, I believe the discussion about the quality is also some kind of subjective to each one. While many just don't care, you can indirectly say for them there is no difference.. But for me personally quality has very high importance and I really quickly notice when there is something at lower quality. But you will quickly and easy find the answer to this question by yourself already with just watching the demo clips.
What at the other hand I would agree when it comes to resolution and displays is, that for many displays it's defenitely anough to download the 1080p Version of a 3k/4k show. But this is not to mix up with the compared quality of 3k and 1080p shows.
By the way.. regarding "Buy newly released cards within a week of their release date to get a better price, but mainly do this after you have reached 40 cards". As far as I know, I would have said this is only true for premium members. But maybe I'm wrong?