Depends on your content. The key-artifact of those 64kb intros is that the content can usually be described as mathematical. A textured sphere? Pure math, a 303 loop in music? Purely simple formulas. It gets bad when you actually want non-formule stuff in it. A human model already requires somewhat of a pre-fab table, and real samples of acoustic instruments are also huge. If a DVD is said to be not enough then I estimate -or rather: 'hope'- that they're filling it up with HD videos and other huge quality media. So, as long as a DVD is genuinely filled, I won't bother. Besides, whether you fill 1Gb or 4Gb .. it's still a DVD you need, you can as well fill it up completely.