What you will find "good" is very subjective, I think it's also heavily based on what's familiar to you. If you have been using the same bright and bass-heavy (v-shaped) hi-fi for years then this is probably what you will like and what will sound "right" to you. This is why I think "burning in" headphones is 99% psychological, rather than mechanical. Rather than trashing all modern hi-fi headphones for being more neutral (and imo, more high fidelity) than what you like, you should try and evaluate the sound you want your headphones to make, and then people can make recommendations based on this and your budget. But even then, we're back to the whole subjective sound thing, as what one person might recommend to you as exciting or involving headphones might be really boring to you; one person's idea of sweet highs might be an ear piercing screech to someone else.
Anyway, if you really want a super bargain bang-for-buck headphone, look at superlux headphones, I was really surprised at how good the HD681 sounded, I mean, really, really.